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-rw-r--r--test/bundler/esbuild/dce.test.ts2749
1 files changed, 2749 insertions, 0 deletions
diff --git a/test/bundler/esbuild/dce.test.ts b/test/bundler/esbuild/dce.test.ts
new file mode 100644
index 000000000..2cd8a971b
--- /dev/null
+++ b/test/bundler/esbuild/dce.test.ts
@@ -0,0 +1,2749 @@
+import { expectBundled, itBundled, testForFile } from "../expectBundled";
+var { describe, test, expect } = testForFile(import.meta.path);
+
+// Tests ported from:
+// https://github.com/evanw/esbuild/blob/main/internal/bundler_tests/bundler_dce_test.go
+
+// For debug, all files are written to $TEMP/bun-bundle-tests/dce
+
+describe("bundler", () => {
+ return;
+ itBundled("dce/PackageJsonSideEffectsFalseKeepNamedImportES6", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log(foo)
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseKeepNamedImportCommonJS", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log(foo)
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ exports.foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseKeepStarImportES6", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import * as ns from "demo-pkg"
+ console.log(ns)
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseKeepStarImportCommonJS", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import * as ns from "demo-pkg"
+ console.log(ns)
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ exports.foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsTrueKeepES6", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": true
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsTrueKeepCommonJS", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ exports.foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": true
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseKeepBareImportAndRequireES6", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg"
+ require('demo-pkg')
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ /* TODO FIX expectedScanLog: `Users/user/project/src/entry.js: WARNING: Ignoring this import because "Users/user/project/node_modules/demo-pkg/index.js" was marked as having no side effects
+ Users/user/project/node_modules/demo-pkg/package.json: NOTE: "sideEffects" is false in the enclosing "package.json" file:
+ `, */
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseKeepBareImportAndRequireCommonJS", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg"
+ require('demo-pkg')
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ exports.foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ /* TODO FIX expectedScanLog: `Users/user/project/src/entry.js: WARNING: Ignoring this import because "Users/user/project/node_modules/demo-pkg/index.js" was marked as having no side effects
+ Users/user/project/node_modules/demo-pkg/package.json: NOTE: "sideEffects" is false in the enclosing "package.json" file:
+ `, */
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseRemoveBareImportES6", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ /* TODO FIX expectedScanLog: `Users/user/project/src/entry.js: WARNING: Ignoring this import because "Users/user/project/node_modules/demo-pkg/index.js" was marked as having no side effects
+ Users/user/project/node_modules/demo-pkg/package.json: NOTE: "sideEffects" is false in the enclosing "package.json" file:
+ `, */
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseRemoveBareImportCommonJS", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ exports.foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ /* TODO FIX expectedScanLog: `Users/user/project/src/entry.js: WARNING: Ignoring this import because "Users/user/project/node_modules/demo-pkg/index.js" was marked as having no side effects
+ Users/user/project/node_modules/demo-pkg/package.json: NOTE: "sideEffects" is false in the enclosing "package.json" file:
+ `, */
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseRemoveNamedImportES6", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseRemoveNamedImportCommonJS", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ exports.foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseRemoveStarImportES6", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import * as ns from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseRemoveStarImportCommonJS", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import * as ns from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ exports.foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayRemove", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": []
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeep", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": ["./index.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepMainUseModule", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-main.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepMainUseMain", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('this should be kept')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-main.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepMainImplicitModule", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-main.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepMainImplicitMain", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ import "./require-demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/src/require-demo-pkg.js": /* js */ `
+ // This causes "index-main.js" to be selected
+ require('demo-pkg')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('this should be kept')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-main.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepModuleUseModule", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('this should be kept')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-module.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepModuleUseMain", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-module.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepModuleImplicitModule", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('this should be kept')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-module.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayKeepModuleImplicitMain", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ import "./require-demo-pkg"
+ console.log('unused import')
+ `,
+ "/Users/user/project/src/require-demo-pkg.js": /* js */ `
+ // This causes "index-main.js" to be selected
+ require('demo-pkg')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-main.js": /* js */ `
+ export const foo = 123
+ console.log('this should be kept')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index-module.js": /* js */ `
+ export const foo = 123
+ console.log('TEST FAILED')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "main": "index-main.js",
+ "module": "index-module.js",
+ "sideEffects": ["./index-module.js"]
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsArrayGlob", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg/keep/this/file"
+ import "demo-pkg/remove/this/file"
+ `,
+ "/Users/user/project/node_modules/demo-pkg/keep/this/file.js": `console.log('this should be kept')`,
+ "/Users/user/project/node_modules/demo-pkg/remove/this/file.js": `console.log('TEST FAILED')`,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": [
+ "./ke?p/*/file.js",
+ "./remove/this/file.j",
+ "./re?ve/this/file.js"
+ ]
+ }
+ `,
+ },
+ /* TODO FIX expectedScanLog: `Users/user/project/src/entry.js: WARNING: Ignoring this import because "Users/user/project/node_modules/demo-pkg/remove/this/file.js" was marked as having no side effects
+ Users/user/project/node_modules/demo-pkg/package.json: NOTE: It was excluded from the "sideEffects" array in the enclosing "package.json" file:
+ `, */
+ });
+ itBundled("dce/PackageJsonSideEffectsNestedDirectoryRemove", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg/a/b/c"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ "/Users/user/project/node_modules/demo-pkg/a/b/c/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsKeepExportDefaultExpr", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import foo from "demo-pkg"
+ console.log(foo)
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": `export default exprWithSideEffects()`,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseNoWarningInNodeModulesIssue999", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg"
+ console.log('used import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ import "demo-pkg2"
+ console.log('unused import')
+ `,
+ "/Users/user/project/node_modules/demo-pkg2/index.js": /* js */ `
+ export const foo = 123
+ console.log('hello')
+ `,
+ "/Users/user/project/node_modules/demo-pkg2/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseIntermediateFilesUnused", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": `import {foo} from "demo-pkg"`,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export {foo} from "./foo.js"
+ throw 'REMOVE THIS'
+ `,
+ "/Users/user/project/node_modules/demo-pkg/foo.js": `export const foo = 123`,
+ "/Users/user/project/node_modules/demo-pkg/package.json": `{ "sideEffects": false }`,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseIntermediateFilesUsed", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "demo-pkg"
+ console.log(foo)
+ `,
+ "/Users/user/project/node_modules/demo-pkg/index.js": /* js */ `
+ export {foo} from "./foo.js"
+ throw 'keep this'
+ `,
+ "/Users/user/project/node_modules/demo-pkg/foo.js": `export const foo = 123`,
+ "/Users/user/project/node_modules/demo-pkg/package.json": `{ "sideEffects": false }`,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseIntermediateFilesChainAll", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "a"
+ console.log(foo)
+ `,
+ "/Users/user/project/node_modules/a/index.js": `export {foo} from "b"`,
+ "/Users/user/project/node_modules/a/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/b/index.js": /* js */ `
+ export {foo} from "c"
+ throw 'keep this'
+ `,
+ "/Users/user/project/node_modules/b/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/c/index.js": `export {foo} from "d"`,
+ "/Users/user/project/node_modules/c/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/d/index.js": `export const foo = 123`,
+ "/Users/user/project/node_modules/d/package.json": `{ "sideEffects": false }`,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseIntermediateFilesChainOne", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "a"
+ console.log(foo)
+ `,
+ "/Users/user/project/node_modules/a/index.js": `export {foo} from "b"`,
+ "/Users/user/project/node_modules/b/index.js": /* js */ `
+ export {foo} from "c"
+ throw 'keep this'
+ `,
+ "/Users/user/project/node_modules/b/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/c/index.js": `export {foo} from "d"`,
+ "/Users/user/project/node_modules/d/index.js": `export const foo = 123`,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseIntermediateFilesDiamond", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import {foo} from "a"
+ console.log(foo)
+ `,
+ "/Users/user/project/node_modules/a/index.js": /* js */ `
+ export * from "b1"
+ export * from "b2"
+ `,
+ "/Users/user/project/node_modules/b1/index.js": /* js */ `
+ export {foo} from "c"
+ throw 'keep this 1'
+ `,
+ "/Users/user/project/node_modules/b1/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/b2/index.js": /* js */ `
+ export {foo} from "c"
+ throw 'keep this 2'
+ `,
+ "/Users/user/project/node_modules/b2/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/c/index.js": `export {foo} from "d"`,
+ "/Users/user/project/node_modules/d/index.js": `export const foo = 123`,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseOneFork", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": `import("a").then(x => assert(x.foo === "foo"))`,
+ "/Users/user/project/node_modules/a/index.js": `export {foo} from "b"`,
+ "/Users/user/project/node_modules/b/index.js": /* js */ `
+ export {foo, bar} from "c"
+ export {baz} from "d"
+ `,
+ "/Users/user/project/node_modules/b/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/c/index.js": /* js */ `
+ export let foo = "foo"
+ export let bar = "bar"
+ `,
+ "/Users/user/project/node_modules/d/index.js": `export let baz = "baz"`,
+ },
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseAllFork", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": `import("a").then(x => assert(x.foo === "foo"))`,
+ "/Users/user/project/node_modules/a/index.js": `export {foo} from "b"`,
+ "/Users/user/project/node_modules/b/index.js": /* js */ `
+ export {foo, bar} from "c"
+ export {baz} from "d"
+ `,
+ "/Users/user/project/node_modules/b/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/c/index.js": /* js */ `
+ export let foo = "foo"
+ export let bar = "bar"
+ `,
+ "/Users/user/project/node_modules/c/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/d/index.js": `export let baz = "baz"`,
+ "/Users/user/project/node_modules/d/package.json": `{ "sideEffects": false }`,
+ },
+ });
+ itBundled("dce/JSONLoaderRemoveUnused", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import unused from "./example.json"
+ console.log('unused import')
+ `,
+ "/example.json": `{"data": true}`,
+ },
+ });
+ itBundled("dce/TextLoaderRemoveUnused", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import unused from "./example.txt"
+ console.log('unused import')
+ `,
+ "/example.txt": `some data`,
+ },
+ });
+ itBundled("dce/Base64LoaderRemoveUnused", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import unused from "./example.data"
+ console.log('unused import')
+ `,
+ "/example.data": `some data`,
+ },
+ });
+ itBundled("dce/DataURLLoaderRemoveUnused", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import unused from "./example.data"
+ console.log('unused import')
+ `,
+ "/example.data": `some data`,
+ },
+ });
+ itBundled("dce/FileLoaderRemoveUnused", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import unused from "./example.data"
+ console.log('unused import')
+ `,
+ "/example.data": `some data`,
+ },
+ });
+ itBundled("dce/RemoveUnusedImportMeta", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function foo() {
+ console.log(import.meta.url, import.meta.path)
+ }
+ console.log('foo is unused')
+ `,
+ },
+ });
+ itBundled("dce/RemoveUnusedPureCommentCalls", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function bar() {}
+ let bare = foo(bar);
+
+ let at_yes = /* @__PURE__ */ foo(bar);
+ let at_no = /* @__PURE__ */ foo(bar());
+ let new_at_yes = /* @__PURE__ */ new foo(bar);
+ let new_at_no = /* @__PURE__ */ new foo(bar());
+
+ let nospace_at_yes = /*@__PURE__*/ foo(bar);
+ let nospace_at_no = /*@__PURE__*/ foo(bar());
+ let nospace_new_at_yes = /*@__PURE__*/ new foo(bar);
+ let nospace_new_at_no = /*@__PURE__*/ new foo(bar());
+
+ let num_yes = /* #__PURE__ */ foo(bar);
+ let num_no = /* #__PURE__ */ foo(bar());
+ let new_num_yes = /* #__PURE__ */ new foo(bar);
+ let new_num_no = /* #__PURE__ */ new foo(bar());
+
+ let nospace_num_yes = /*#__PURE__*/ foo(bar);
+ let nospace_num_no = /*#__PURE__*/ foo(bar());
+ let nospace_new_num_yes = /*#__PURE__*/ new foo(bar);
+ let nospace_new_num_no = /*#__PURE__*/ new foo(bar());
+
+ let dot_yes = /* @__PURE__ */ foo(sideEffect()).dot(bar);
+ let dot_no = /* @__PURE__ */ foo(sideEffect()).dot(bar());
+ let new_dot_yes = /* @__PURE__ */ new foo(sideEffect()).dot(bar);
+ let new_dot_no = /* @__PURE__ */ new foo(sideEffect()).dot(bar());
+
+ let nested_yes = [1, /* @__PURE__ */ foo(bar), 2];
+ let nested_no = [1, /* @__PURE__ */ foo(bar()), 2];
+ let new_nested_yes = [1, /* @__PURE__ */ new foo(bar), 2];
+ let new_nested_no = [1, /* @__PURE__ */ new foo(bar()), 2];
+
+ let single_at_yes = // @__PURE__
+ foo(bar);
+ let single_at_no = // @__PURE__
+ foo(bar());
+ let new_single_at_yes = // @__PURE__
+ new foo(bar);
+ let new_single_at_no = // @__PURE__
+ new foo(bar());
+
+ let single_num_yes = // #__PURE__
+ foo(bar);
+ let single_num_no = // #__PURE__
+ foo(bar());
+ let new_single_num_yes = // #__PURE__
+ new foo(bar);
+ let new_single_num_no = // #__PURE__
+ new foo(bar());
+
+ let bad_no = /* __PURE__ */ foo(bar);
+ let new_bad_no = /* __PURE__ */ new foo(bar);
+
+ let parens_no = (/* @__PURE__ */ foo)(bar);
+ let new_parens_no = new (/* @__PURE__ */ foo)(bar);
+
+ let exp_no = /* @__PURE__ */ foo() ** foo();
+ let new_exp_no = /* @__PURE__ */ new foo() ** foo();
+ `,
+ },
+ });
+ itBundled("dce/TreeShakingReactElements", {
+ // GENERATED
+ files: {
+ "/entry.jsx": /* jsx */ `
+ function Foo() {}
+
+ let a = <div/>
+ let b = <Foo>{a}</Foo>
+ let c = <>{b}</>
+
+ let d = <div/>
+ let e = <Foo>{d}</Foo>
+ let f = <>{e}</>
+ console.log(f)
+ `,
+ },
+ });
+ itBundled("dce/DisableTreeShaking", {
+ // GENERATED
+ files: {
+ "/entry.jsx": /* jsx */ `
+ import './remove-me'
+ function RemoveMe1() {}
+ let removeMe2 = 0
+ class RemoveMe3 {}
+
+ import './keep-me'
+ function KeepMe1() {}
+ let keepMe2 = <KeepMe1/>
+ function keepMe3() { console.log('side effects') }
+ let keepMe4 = /* @__PURE__ */ keepMe3()
+ let keepMe5 = pure()
+ let keepMe6 = some.fn()
+ `,
+ "/remove-me.js": `export default 'unused'`,
+ "/keep-me/index.js": `console.log('side effects')`,
+ "/keep-me/package.json": `{ "sideEffects": false }`,
+ },
+ // TODO: Unsure how to port this: https://github.com/evanw/esbuild/blob/main/internal/bundler_tests/bundler_dce_test.go#L1249
+ ignoreDCEAnnotations: true,
+ define: {
+ pure: "???",
+ "some.fn": "???",
+ },
+ });
+ itBundled("dce/DeadCodeFollowingJump", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function testReturn() {
+ if (true) return y + z()
+ if (FAIL) return FAIL
+ if (x) { var y }
+ function z() { KEEP_ME() }
+ return FAIL
+ }
+
+ function testThrow() {
+ if (true) throw y + z()
+ if (FAIL) return FAIL
+ if (x) { var y }
+ function z() { KEEP_ME() }
+ return FAIL
+ }
+
+ function testBreak() {
+ while (true) {
+ if (true) {
+ y + z()
+ break
+ }
+ if (FAIL) return FAIL
+ if (x) { var y }
+ function z() { KEEP_ME() }
+ return FAIL
+ }
+ }
+
+ function testContinue() {
+ while (true) {
+ if (true) {
+ y + z()
+ continue
+ }
+ if (FAIL) return FAIL
+ if (x) { var y }
+ function z() { KEEP_ME() }
+ return FAIL
+ }
+ }
+
+ function testStmts() {
+ return [a, b, c, d, e, f, g, h, i]
+
+ while (x) { var a }
+ while (FAIL) { let FAIL }
+
+ do { var b } while (x)
+ do { let FAIL } while (FAIL)
+
+ for (var c; ;) ;
+ for (let FAIL; ;) ;
+
+ for (var d in x) ;
+ for (let FAIL in FAIL) ;
+
+ for (var e of x) ;
+ for (let FAIL of FAIL) ;
+
+ if (x) { var f }
+ if (FAIL) { let FAIL }
+
+ if (x) ; else { var g }
+ if (FAIL) ; else { let FAIL }
+
+ { var h }
+ { let FAIL }
+
+ x: { var i }
+ x: { let FAIL }
+ }
+
+ testReturn()
+ testThrow()
+ testBreak()
+ testContinue()
+ testStmts()
+ `,
+ },
+ });
+ itBundled("dce/RemoveTrailingReturn", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function foo() {
+ if (a) b()
+ return
+ }
+ function bar() {
+ if (a) b()
+ return KEEP_ME
+ }
+ export default [
+ foo,
+ bar,
+ function () {
+ if (a) b()
+ return
+ },
+ function () {
+ if (a) b()
+ return KEEP_ME
+ },
+ () => {
+ if (a) b()
+ return
+ },
+ () => {
+ if (a) b()
+ return KEEP_ME
+ },
+ ]
+ `,
+ },
+ minifySyntax: true,
+ });
+ itBundled("dce/ImportReExportOfNamespaceImport", {
+ // GENERATED
+ files: {
+ "/Users/user/project/entry.js": /* js */ `
+ import * as ns from 'pkg'
+ console.log(ns.foo)
+ `,
+ "/Users/user/project/node_modules/pkg/index.js": /* js */ `
+ export { default as foo } from './foo'
+ export { default as bar } from './bar'
+ `,
+ "/Users/user/project/node_modules/pkg/package.json": `{ "sideEffects": false }`,
+ "/Users/user/project/node_modules/pkg/foo.js": `module.exports = 123`,
+ "/Users/user/project/node_modules/pkg/bar.js": `module.exports = 'abc'`,
+ },
+ });
+ itBundled("dce/TreeShakingImportIdentifier", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import * as a from './a'
+ new a.Keep()
+ `,
+ "/a.js": /* js */ `
+ import * as b from './b'
+ export class Keep extends b.Base {}
+ export class REMOVE extends b.Base {}
+ `,
+ "/b.js": `export class Base {}`,
+ },
+ });
+ itBundled("dce/TreeShakingObjectProperty", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ let remove1 = { x: 'x' }
+ let remove2 = { x() {} }
+ let remove3 = { get x() {} }
+ let remove4 = { set x(_) {} }
+ let remove5 = { async x() {} }
+ let remove6 = { ['x']: 'x' }
+ let remove7 = { ['x']() {} }
+ let remove8 = { get ['x']() {} }
+ let remove9 = { set ['x'](_) {} }
+ let remove10 = { async ['x']() {} }
+ let remove11 = { [0]: 'x' }
+ let remove12 = { [null]: 'x' }
+ let remove13 = { [undefined]: 'x' }
+ let remove14 = { [false]: 'x' }
+ let remove15 = { [0n]: 'x' }
+ let remove16 = { toString() {} }
+
+ let keep1 = { x }
+ let keep2 = { x: x }
+ let keep3 = { ...x }
+ let keep4 = { [x]: 'x' }
+ let keep5 = { [x]() {} }
+ let keep6 = { get [x]() {} }
+ let keep7 = { set [x](_) {} }
+ let keep8 = { async [x]() {} }
+ let keep9 = { [{ toString() {} }]: 'x' }
+ `,
+ },
+ treeShaking: true,
+ mode: "passthrough",
+ });
+ itBundled("dce/TreeShakingClassProperty", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ let remove1 = class { x }
+ let remove2 = class { x = x }
+ let remove3 = class { x() {} }
+ let remove4 = class { get x() {} }
+ let remove5 = class { set x(_) {} }
+ let remove6 = class { async x() {} }
+ let remove7 = class { ['x'] = x }
+ let remove8 = class { ['x']() {} }
+ let remove9 = class { get ['x']() {} }
+ let remove10 = class { set ['x'](_) {} }
+ let remove11 = class { async ['x']() {} }
+ let remove12 = class { [0] = 'x' }
+ let remove13 = class { [null] = 'x' }
+ let remove14 = class { [undefined] = 'x' }
+ let remove15 = class { [false] = 'x' }
+ let remove16 = class { [0n] = 'x' }
+ let remove17 = class { toString() {} }
+
+ let keep1 = class { [x] = 'x' }
+ let keep2 = class { [x]() {} }
+ let keep3 = class { get [x]() {} }
+ let keep4 = class { set [x](_) {} }
+ let keep5 = class { async [x]() {} }
+ let keep6 = class { [{ toString() {} }] = 'x' }
+ `,
+ },
+ treeShaking: true,
+ mode: "passthrough",
+ });
+ itBundled("dce/TreeShakingClassStaticProperty", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ let remove1 = class { static x }
+ let remove3 = class { static x() {} }
+ let remove4 = class { static get x() {} }
+ let remove5 = class { static set x(_) {} }
+ let remove6 = class { static async x() {} }
+ let remove8 = class { static ['x']() {} }
+ let remove9 = class { static get ['x']() {} }
+ let remove10 = class { static set ['x'](_) {} }
+ let remove11 = class { static async ['x']() {} }
+ let remove12 = class { static [0] = 'x' }
+ let remove13 = class { static [null] = 'x' }
+ let remove14 = class { static [undefined] = 'x' }
+ let remove15 = class { static [false] = 'x' }
+ let remove16 = class { static [0n] = 'x' }
+ let remove17 = class { static toString() {} }
+
+ let keep1 = class { static x = x }
+ let keep2 = class { static ['x'] = x }
+ let keep3 = class { static [x] = 'x' }
+ let keep4 = class { static [x]() {} }
+ let keep5 = class { static get [x]() {} }
+ let keep6 = class { static set [x](_) {} }
+ let keep7 = class { static async [x]() {} }
+ let keep8 = class { static [{ toString() {} }] = 'x' }
+ `,
+ },
+ treeShaking: true,
+ mode: "passthrough",
+ });
+ itBundled("dce/TreeShakingUnaryOperators", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ // These operators may have side effects
+ let keep;
+ +keep;
+ -keep;
+ ~keep;
+ delete keep;
+ ++keep;
+ --keep;
+ keep++;
+ keep--;
+
+ // These operators never have side effects
+ let REMOVE;
+ !REMOVE;
+ void REMOVE;
+ `,
+ },
+ });
+ itBundled("dce/TreeShakingBinaryOperators", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ // These operators may have side effects
+ let keep, keep2;
+ keep + keep2;
+ keep - keep2;
+ keep * keep2;
+ keep / keep2;
+ keep % keep2;
+ keep ** keep2;
+ keep < keep2;
+ keep <= keep2;
+ keep > keep2;
+ keep >= keep2;
+ keep in keep2;
+ keep instanceof keep2;
+ keep << keep2;
+ keep >> keep2;
+ keep >>> keep2;
+ keep == keep2;
+ keep != keep2;
+ keep | keep2;
+ keep & keep2;
+ keep ^ keep2;
+ keep = keep2;
+ keep += keep2;
+ keep -= keep2;
+ keep *= keep2;
+ keep /= keep2;
+ keep %= keep2;
+ keep **= keep2;
+ keep <<= keep2;
+ keep >>= keep2;
+ keep >>>= keep2;
+ keep |= keep2;
+ keep &= keep2;
+ keep ^= keep2;
+ keep ??= keep2;
+ keep ||= keep2;
+ keep &&= keep2;
+
+ // These operators never have side effects
+ let REMOVE, REMOVE2;
+ REMOVE === REMOVE2;
+ REMOVE !== REMOVE2;
+ REMOVE, REMOVE2;
+ REMOVE ?? REMOVE2;
+ REMOVE || REMOVE2;
+ REMOVE && REMOVE2;
+ `,
+ },
+ });
+ itBundled("dce/TreeShakingNoBundleESM", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function keep() {}
+ function unused() {}
+ keep()
+ `,
+ },
+ format: "esm",
+ mode: "convertformat",
+ });
+ itBundled("dce/TreeShakingNoBundleCJS", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function keep() {}
+ function unused() {}
+ keep()
+ `,
+ },
+ format: "cjs",
+ mode: "convertformat",
+ });
+ itBundled("dce/TreeShakingNoBundleIIFE", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function keep() {}
+ function REMOVE() {}
+ keep()
+ `,
+ },
+ format: "iife",
+ mode: "convertformat",
+ });
+ itBundled("dce/TreeShakingInESMWrapper", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import {keep1} from './lib'
+ console.log(keep1(), require('./cjs'))
+ `,
+ "/cjs.js": /* js */ `
+ import {keep2} from './lib'
+ export default keep2()
+ `,
+ "/lib.js": /* js */ `
+ export let keep1 = () => 'keep1'
+ export let keep2 = () => 'keep2'
+ export let REMOVE = () => 'REMOVE'
+ `,
+ },
+ format: "esm",
+ });
+ itBundled("dce/DCETypeOf", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ // These should be removed because they have no side effects
+ typeof x_REMOVE
+ typeof v_REMOVE
+ typeof f_REMOVE
+ typeof g_REMOVE
+ typeof a_REMOVE
+ var v_REMOVE
+ function f_REMOVE() {}
+ function* g_REMOVE() {}
+ async function a_REMOVE() {}
+
+ // These technically have side effects due to TDZ, but this is not currently handled
+ typeof c_remove
+ typeof l_remove
+ typeof s_remove
+ const c_remove = 0
+ let l_remove
+ class s_remove {}
+ `,
+ },
+ format: "esm",
+ });
+ itBundled("dce/DCETypeOfEqualsString", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ var hasBar = typeof bar !== 'undefined'
+ if (false) console.log(hasBar)
+ `,
+ },
+ format: "iife",
+ });
+ itBundled("dce/DCETypeOfEqualsStringMangle", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ // Everything here should be removed as dead code due to tree shaking
+ var hasBar = typeof bar !== 'undefined'
+ if (false) console.log(hasBar)
+ `,
+ },
+ format: "iife",
+ minifySyntax: true,
+ });
+ itBundled("dce/DCETypeOfEqualsStringGuardCondition", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ // Everything here should be removed as dead code due to tree shaking
+ var REMOVE_1 = typeof x !== 'undefined' ? x : null
+ var REMOVE_1 = typeof x != 'undefined' ? x : null
+ var REMOVE_1 = typeof x === 'undefined' ? null : x
+ var REMOVE_1 = typeof x == 'undefined' ? null : x
+ var REMOVE_1 = typeof x !== 'undefined' && x
+ var REMOVE_1 = typeof x != 'undefined' && x
+ var REMOVE_1 = typeof x === 'undefined' || x
+ var REMOVE_1 = typeof x == 'undefined' || x
+ var REMOVE_1 = 'undefined' !== typeof x ? x : null
+ var REMOVE_1 = 'undefined' != typeof x ? x : null
+ var REMOVE_1 = 'undefined' === typeof x ? null : x
+ var REMOVE_1 = 'undefined' == typeof x ? null : x
+ var REMOVE_1 = 'undefined' !== typeof x && x
+ var REMOVE_1 = 'undefined' != typeof x && x
+ var REMOVE_1 = 'undefined' === typeof x || x
+ var REMOVE_1 = 'undefined' == typeof x || x
+
+ // Everything here should be removed as dead code due to tree shaking
+ var REMOVE_2 = typeof x === 'object' ? x : null
+ var REMOVE_2 = typeof x == 'object' ? x : null
+ var REMOVE_2 = typeof x !== 'object' ? null : x
+ var REMOVE_2 = typeof x != 'object' ? null : x
+ var REMOVE_2 = typeof x === 'object' && x
+ var REMOVE_2 = typeof x == 'object' && x
+ var REMOVE_2 = typeof x !== 'object' || x
+ var REMOVE_2 = typeof x != 'object' || x
+ var REMOVE_2 = 'object' === typeof x ? x : null
+ var REMOVE_2 = 'object' == typeof x ? x : null
+ var REMOVE_2 = 'object' !== typeof x ? null : x
+ var REMOVE_2 = 'object' != typeof x ? null : x
+ var REMOVE_2 = 'object' === typeof x && x
+ var REMOVE_2 = 'object' == typeof x && x
+ var REMOVE_2 = 'object' !== typeof x || x
+ var REMOVE_2 = 'object' != typeof x || x
+
+ // Everything here should be kept as live code because it has side effects
+ var keep_1 = typeof x !== 'object' ? x : null
+ var keep_1 = typeof x != 'object' ? x : null
+ var keep_1 = typeof x === 'object' ? null : x
+ var keep_1 = typeof x == 'object' ? null : x
+ var keep_1 = typeof x !== 'object' && x
+ var keep_1 = typeof x != 'object' && x
+ var keep_1 = typeof x === 'object' || x
+ var keep_1 = typeof x == 'object' || x
+ var keep_1 = 'object' !== typeof x ? x : null
+ var keep_1 = 'object' != typeof x ? x : null
+ var keep_1 = 'object' === typeof x ? null : x
+ var keep_1 = 'object' == typeof x ? null : x
+ var keep_1 = 'object' !== typeof x && x
+ var keep_1 = 'object' != typeof x && x
+ var keep_1 = 'object' === typeof x || x
+ var keep_1 = 'object' == typeof x || x
+
+ // Everything here should be kept as live code because it has side effects
+ var keep_2 = typeof x !== 'undefined' ? y : null
+ var keep_2 = typeof x != 'undefined' ? y : null
+ var keep_2 = typeof x === 'undefined' ? null : y
+ var keep_2 = typeof x == 'undefined' ? null : y
+ var keep_2 = typeof x !== 'undefined' && y
+ var keep_2 = typeof x != 'undefined' && y
+ var keep_2 = typeof x === 'undefined' || y
+ var keep_2 = typeof x == 'undefined' || y
+ var keep_2 = 'undefined' !== typeof x ? y : null
+ var keep_2 = 'undefined' != typeof x ? y : null
+ var keep_2 = 'undefined' === typeof x ? null : y
+ var keep_2 = 'undefined' == typeof x ? null : y
+ var keep_2 = 'undefined' !== typeof x && y
+ var keep_2 = 'undefined' != typeof x && y
+ var keep_2 = 'undefined' === typeof x || y
+ var keep_2 = 'undefined' == typeof x || y
+
+ // Everything here should be kept as live code because it has side effects
+ var keep_3 = typeof x !== 'undefined' ? null : x
+ var keep_3 = typeof x != 'undefined' ? null : x
+ var keep_3 = typeof x === 'undefined' ? x : null
+ var keep_3 = typeof x == 'undefined' ? x : null
+ var keep_3 = typeof x !== 'undefined' || x
+ var keep_3 = typeof x != 'undefined' || x
+ var keep_3 = typeof x === 'undefined' && x
+ var keep_3 = typeof x == 'undefined' && x
+ var keep_3 = 'undefined' !== typeof x ? null : x
+ var keep_3 = 'undefined' != typeof x ? null : x
+ var keep_3 = 'undefined' === typeof x ? x : null
+ var keep_3 = 'undefined' == typeof x ? x : null
+ var keep_3 = 'undefined' !== typeof x || x
+ var keep_3 = 'undefined' != typeof x || x
+ var keep_3 = 'undefined' === typeof x && x
+ var keep_3 = 'undefined' == typeof x && x
+ `,
+ },
+ format: "iife",
+ });
+ itBundled("dce/DCETypeOfCompareStringGuardCondition", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ // Everything here should be removed as dead code due to tree shaking
+ var REMOVE_1 = typeof x <= 'u' ? x : null
+ var REMOVE_1 = typeof x < 'u' ? x : null
+ var REMOVE_1 = typeof x >= 'u' ? null : x
+ var REMOVE_1 = typeof x > 'u' ? null : x
+ var REMOVE_1 = typeof x <= 'u' && x
+ var REMOVE_1 = typeof x < 'u' && x
+ var REMOVE_1 = typeof x >= 'u' || x
+ var REMOVE_1 = typeof x > 'u' || x
+ var REMOVE_1 = 'u' >= typeof x ? x : null
+ var REMOVE_1 = 'u' > typeof x ? x : null
+ var REMOVE_1 = 'u' <= typeof x ? null : x
+ var REMOVE_1 = 'u' < typeof x ? null : x
+ var REMOVE_1 = 'u' >= typeof x && x
+ var REMOVE_1 = 'u' > typeof x && x
+ var REMOVE_1 = 'u' <= typeof x || x
+ var REMOVE_1 = 'u' < typeof x || x
+
+ // Everything here should be kept as live code because it has side effects
+ var keep_1 = typeof x <= 'u' ? y : null
+ var keep_1 = typeof x < 'u' ? y : null
+ var keep_1 = typeof x >= 'u' ? null : y
+ var keep_1 = typeof x > 'u' ? null : y
+ var keep_1 = typeof x <= 'u' && y
+ var keep_1 = typeof x < 'u' && y
+ var keep_1 = typeof x >= 'u' || y
+ var keep_1 = typeof x > 'u' || y
+ var keep_1 = 'u' >= typeof x ? y : null
+ var keep_1 = 'u' > typeof x ? y : null
+ var keep_1 = 'u' <= typeof x ? null : y
+ var keep_1 = 'u' < typeof x ? null : y
+ var keep_1 = 'u' >= typeof x && y
+ var keep_1 = 'u' > typeof x && y
+ var keep_1 = 'u' <= typeof x || y
+ var keep_1 = 'u' < typeof x || y
+
+ // Everything here should be kept as live code because it has side effects
+ var keep_2 = typeof x <= 'u' ? null : x
+ var keep_2 = typeof x < 'u' ? null : x
+ var keep_2 = typeof x >= 'u' ? x : null
+ var keep_2 = typeof x > 'u' ? x : null
+ var keep_2 = typeof x <= 'u' || x
+ var keep_2 = typeof x < 'u' || x
+ var keep_2 = typeof x >= 'u' && x
+ var keep_2 = typeof x > 'u' && x
+ var keep_2 = 'u' >= typeof x ? null : x
+ var keep_2 = 'u' > typeof x ? null : x
+ var keep_2 = 'u' <= typeof x ? x : null
+ var keep_2 = 'u' < typeof x ? x : null
+ var keep_2 = 'u' >= typeof x || x
+ var keep_2 = 'u' > typeof x || x
+ var keep_2 = 'u' <= typeof x && x
+ var keep_2 = 'u' < typeof x && x
+ `,
+ },
+ format: "iife",
+ });
+ itBundled("dce/RemoveUnusedImports", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import a from 'a'
+ import * as b from 'b'
+ import {c} from 'c'
+ `,
+ },
+ minifySyntax: true,
+ mode: "passthrough",
+ });
+ itBundled("dce/RemoveUnusedImportsEval", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ import a from 'a'
+ import * as b from 'b'
+ import {c} from 'c'
+ eval('foo(a, b, c)')
+ `,
+ },
+ minifySyntax: true,
+ mode: "passthrough",
+ });
+ itBundled("dce/RemoveUnusedImportsEvalTS", {
+ // GENERATED
+ files: {
+ "/entry.ts": /* ts */ `
+ import a from 'a'
+ import * as b from 'b'
+ import {c} from 'c'
+ eval('foo(a, b, c)')
+ `,
+ },
+ entryPoints: ["/entry.js"],
+ minifySyntax: true,
+ mode: "passthrough",
+ });
+ itBundled("dce/DCEClassStaticBlocks", {
+ // GENERATED
+ files: {
+ "/entry.ts": /* ts */ `
+ class A_REMOVE {
+ static {}
+ }
+ class B_REMOVE {
+ static { 123 }
+ }
+ class C_REMOVE {
+ static { /* @__PURE__*/ foo() }
+ }
+ class D_REMOVE {
+ static { try {} catch {} }
+ }
+ class E_REMOVE {
+ static { try { /* @__PURE__*/ foo() } catch {} }
+ }
+ class F_REMOVE {
+ static { try { 123 } catch { 123 } finally { 123 } }
+ }
+
+ class A_keep {
+ static { foo }
+ }
+ class B_keep {
+ static { this.foo }
+ }
+ class C_keep {
+ static { try { foo } catch {} }
+ }
+ class D_keep {
+ static { try {} finally { foo } }
+ }
+ `,
+ },
+ entryPoints: ["/entry.js"],
+ });
+ itBundled("dce/DCEVarExports", {
+ // GENERATED
+ files: {
+ "/a.js": /* js */ `
+ var foo = { bar: 123 }
+ module.exports = foo
+ `,
+ "/b.js": /* js */ `
+ var exports = { bar: 123 }
+ module.exports = exports
+ `,
+ "/c.js": /* js */ `
+ var module = { bar: 123 }
+ exports.foo = module
+ `,
+ },
+ entryPoints: ["/a.js", "/b.js", "/c.js"],
+ });
+ itBundled("dce/DCETemplateLiteral", {
+ // GENERATED
+ files: {},
+ entryPoints: ["/entry.js"],
+ });
+ itBundled("dce/TreeShakingLoweredClassStaticField", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ class REMOVE_ME {
+ static x = 'x'
+ static y = 'y'
+ static z = 'z'
+ }
+ function REMOVE_ME_TOO() {
+ new REMOVE_ME()
+ }
+ class KeepMe1 {
+ static x = 'x'
+ static y = sideEffects()
+ static z = 'z'
+ }
+ class KeepMe2 {
+ static x = 'x'
+ static y = 'y'
+ static z = 'z'
+ }
+ new KeepMe2()
+ `,
+ },
+ });
+ itBundled("dce/TreeShakingLoweredClassStaticFieldMinified", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ class REMOVE_ME {
+ static x = 'x'
+ static y = 'y'
+ static z = 'z'
+ }
+ function REMOVE_ME_TOO() {
+ new REMOVE_ME()
+ }
+ class KeepMe1 {
+ static x = 'x'
+ static y = sideEffects()
+ static z = 'z'
+ }
+ class KeepMe2 {
+ static x = 'x'
+ static y = 'y'
+ static z = 'z'
+ }
+ new KeepMe2()
+ `,
+ },
+ unsupportedJSFeatures: "ClassField",
+ });
+ itBundled("dce/TreeShakingLoweredClassStaticFieldAssignment", {
+ // GENERATED
+ files: {
+ "/entry.ts": /* ts */ `
+ class KeepMe1 {
+ static x = 'x'
+ static y = 'y'
+ static z = 'z'
+ }
+ class KeepMe2 {
+ static x = 'x'
+ static y = sideEffects()
+ static z = 'z'
+ }
+ class KeepMe3 {
+ static x = 'x'
+ static y = 'y'
+ static z = 'z'
+ }
+ new KeepMe3()
+ `,
+ },
+ entryPoints: ["/entry.js"],
+ unsupportedJSFeatures: "ClassField",
+ });
+ itBundled("dce/InlineIdentityFunctionCalls", {
+ // GENERATED
+ files: {
+ "/identity.js": /* js */ `
+ function DROP(x) { return x }
+ console.log(DROP(1))
+ DROP(foo())
+ DROP(1)
+ `,
+ "/identity-last.js": /* js */ `
+ function DROP(x) { return [x] }
+ function DROP(x) { return x }
+ console.log(DROP(1))
+ DROP(foo())
+ DROP(1)
+ `,
+ "/identity-cross-module.js": /* js */ `
+ import { DROP } from './identity-cross-module-def'
+ console.log(DROP(1))
+ DROP(foo())
+ DROP(1)
+ `,
+ "/identity-cross-module-def.js": `export function DROP(x) { return x }`,
+ "/identity-no-args.js": /* js */ `
+ function keep(x) { return x }
+ console.log(keep())
+ keep()
+ `,
+ "/identity-two-args.js": /* js */ `
+ function keep(x) { return x }
+ console.log(keep(1, 2))
+ keep(1, 2)
+ `,
+ "/identity-first.js": /* js */ `
+ function keep(x) { return x }
+ function keep(x) { return [x] }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/identity-generator.js": /* js */ `
+ function* keep(x) { return x }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/identity-async.js": /* js */ `
+ async function keep(x) { return x }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign.js": /* js */ `
+ function keep(x) { return x }
+ keep = reassigned
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-inc.js": /* js */ `
+ function keep(x) { return x }
+ keep++
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-div.js": /* js */ `
+ function keep(x) { return x }
+ keep /= reassigned
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-array.js": /* js */ `
+ function keep(x) { return x }
+ [keep] = reassigned
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-object.js": /* js */ `
+ function keep(x) { return x }
+ ({keep} = reassigned)
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/not-identity-two-args.js": /* js */ `
+ function keep(x, y) { return x }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/not-identity-default.js": /* js */ `
+ function keep(x = foo()) { return x }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/not-identity-array.js": /* js */ `
+ function keep([x]) { return x }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/not-identity-object.js": /* js */ `
+ function keep({x}) { return x }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/not-identity-rest.js": /* js */ `
+ function keep(...x) { return x }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/not-identity-return.js": /* js */ `
+ function keep(x) { return [x] }
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ },
+ entryPoints: [
+ "/identity.js",
+ "/identity-last.js",
+ "/identity-first.js",
+ "/identity-generator.js",
+ "/identity-async.js",
+ "/identity-cross-module.js",
+ "/identity-no-args.js",
+ "/identity-two-args.js",
+ "/reassign.js",
+ "/reassign-inc.js",
+ "/reassign-div.js",
+ "/reassign-array.js",
+ "/reassign-object.js",
+ "/not-identity-two-args.js",
+ "/not-identity-default.js",
+ "/not-identity-array.js",
+ "/not-identity-object.js",
+ "/not-identity-rest.js",
+ "/not-identity-return.js",
+ ],
+ });
+ itBundled("dce/InlineEmptyFunctionCalls", {
+ // GENERATED
+ files: {
+ "/empty.js": /* js */ `
+ function DROP() {}
+ console.log(DROP(foo(), bar()))
+ console.log(DROP(foo(), 1))
+ console.log(DROP(1, foo()))
+ console.log(DROP(1))
+ console.log(DROP())
+ DROP(foo(), bar())
+ DROP(foo(), 1)
+ DROP(1, foo())
+ DROP(1)
+ DROP()
+ `,
+ "/empty-comma.js": /* js */ `
+ function DROP() {}
+ console.log((DROP(), DROP(), foo()))
+ console.log((DROP(), foo(), DROP()))
+ console.log((foo(), DROP(), DROP()))
+ for (DROP(); DROP(); DROP()) DROP();
+ DROP(), DROP(), foo();
+ DROP(), foo(), DROP();
+ foo(), DROP(), DROP();
+ `,
+ "/empty-if-else.js": /* js */ `
+ function DROP() {}
+ if (foo) { let bar = baz(); bar(); bar() } else DROP();
+ `,
+ "/empty-last.js": /* js */ `
+ function DROP() { return x }
+ function DROP() { return }
+ console.log(DROP())
+ DROP()
+ `,
+ "/empty-cross-module.js": /* js */ `
+ import { DROP } from './empty-cross-module-def'
+ console.log(DROP())
+ DROP()
+ `,
+ "/empty-cross-module-def.js": `export function DROP() {}`,
+ "/empty-first.js": /* js */ `
+ function keep() { return }
+ function keep() { return x }
+ console.log(keep())
+ keep(foo())
+ keep(1)
+ `,
+ "/empty-generator.js": /* js */ `
+ function* keep() {}
+ console.log(keep())
+ keep(foo())
+ keep(1)
+ `,
+ "/empty-async.js": /* js */ `
+ async function keep() {}
+ console.log(keep())
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign.js": /* js */ `
+ function keep() {}
+ keep = reassigned
+ console.log(keep())
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-inc.js": /* js */ `
+ function keep() {}
+ keep++
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-div.js": /* js */ `
+ function keep() {}
+ keep /= reassigned
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-array.js": /* js */ `
+ function keep() {}
+ [keep] = reassigned
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ "/reassign-object.js": /* js */ `
+ function keep() {}
+ ({keep} = reassigned)
+ console.log(keep(1))
+ keep(foo())
+ keep(1)
+ `,
+ },
+ entryPoints: [
+ "/empty.js",
+ "/empty-comma.js",
+ "/empty-if-else.js",
+ "/empty-last.js",
+ "/empty-cross-module.js",
+ "/empty-first.js",
+ "/empty-generator.js",
+ "/empty-async.js",
+ "/reassign.js",
+ "/reassign-inc.js",
+ "/reassign-div.js",
+ "/reassign-array.js",
+ "/reassign-object.js",
+ ],
+ });
+ itBundled("dce/InlineFunctionCallBehaviorChanges", {
+ // GENERATED
+ files: {
+ "/entry.js": `
+ function empty() {}
+ function id(x) { return x }
+
+ export let shouldBeWrapped = [
+ id(foo.bar)(),
+ id(foo[bar])(),
+ id(foo?.bar)(),
+ id(foo?.[bar])(),
+
+ (empty(), foo.bar)(),
+ (empty(), foo[bar])(),
+ (empty(), foo?.bar)(),
+ (empty(), foo?.[bar])(),
+
+ id(eval)(),
+ id(eval)?.(),
+ (empty(), eval)(),
+ (empty(), eval)?.(),
+
+ id(foo.bar)\` + "\`\`" +
+ `,
+ },
+ mode: "passthrough",
+ });
+ itBundled("dce/InlineFunctionCallForInitDecl", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function empty() {}
+ function id(x) { return x }
+
+ for (var y = empty(); false; ) ;
+ for (var z = id(123); false; ) ;
+ `,
+ },
+ });
+ itBundled("dce/ConstValueInliningNoBundle", {
+ // GENERATED
+ files: {
+ "/top-level.js": /* js */ `
+ // These should be kept because they are top-level and tree shaking is not enabled
+ const n_keep = null
+ const u_keep = undefined
+ const i_keep = 1234567
+ const f_keep = 123.456
+ const s_keep = ''
+
+ // Values should still be inlined
+ console.log(
+ // These are doubled to avoid the "inline const/let into next statement if used once" optimization
+ n_keep, n_keep,
+ u_keep, u_keep,
+ i_keep, i_keep,
+ f_keep, f_keep,
+ s_keep, s_keep,
+ )
+ `,
+ "/nested-block.js": /* js */ `
+ {
+ const REMOVE_n = null
+ const REMOVE_u = undefined
+ const REMOVE_i = 1234567
+ const REMOVE_f = 123.456
+ const s_keep = '' // String inlining is intentionally not supported right now
+ console.log(
+ // These are doubled to avoid the "inline const/let into next statement if used once" optimization
+ REMOVE_n, REMOVE_n,
+ REMOVE_u, REMOVE_u,
+ REMOVE_i, REMOVE_i,
+ REMOVE_f, REMOVE_f,
+ s_keep, s_keep,
+ )
+ }
+ `,
+ "/nested-function.js": /* js */ `
+ function nested() {
+ const REMOVE_n = null
+ const REMOVE_u = undefined
+ const REMOVE_i = 1234567
+ const REMOVE_f = 123.456
+ const s_keep = '' // String inlining is intentionally not supported right now
+ console.log(
+ // These are doubled to avoid the "inline const/let into next statement if used once" optimization
+ REMOVE_n, REMOVE_n,
+ REMOVE_u, REMOVE_u,
+ REMOVE_i, REMOVE_i,
+ REMOVE_f, REMOVE_f,
+ s_keep, s_keep,
+ )
+ }
+ `,
+ "/namespace-export.ts": /* ts */ `
+ namespace ns {
+ const x_REMOVE = 1
+ export const y_keep = 2
+ console.log(
+ x_REMOVE, x_REMOVE,
+ y_keep, y_keep,
+ )
+ }
+ `,
+ "/comment-before.js": /* js */ `
+ {
+ //! comment
+ const REMOVE = 1
+ x = [REMOVE, REMOVE]
+ }
+ `,
+ "/directive-before.js": /* js */ `
+ function nested() {
+ 'directive'
+ const REMOVE = 1
+ x = [REMOVE, REMOVE]
+ }
+ `,
+ "/semicolon-before.js": /* js */ `
+ {
+ ;
+ const REMOVE = 1
+ x = [REMOVE, REMOVE]
+ }
+ `,
+ "/debugger-before.js": /* js */ `
+ {
+ debugger
+ const REMOVE = 1
+ x = [REMOVE, REMOVE]
+ }
+ `,
+ "/type-before.ts": /* ts */ `
+ {
+ declare let x
+ const REMOVE = 1
+ x = [REMOVE, REMOVE]
+ }
+ `,
+ "/exprs-before.js": /* js */ `
+ function nested() {
+ const x = [, '', {}, 0n, /./, function() {}, () => {}]
+ const y_REMOVE = 1
+ function foo() {
+ return y_REMOVE
+ }
+ }
+ `,
+ "/disabled-tdz.js": /* js */ `
+ foo()
+ const x_keep = 1
+ function foo() {
+ return x_keep
+ }
+ `,
+ "/backwards-reference-top-level.js": /* js */ `
+ const x = y
+ const y = 1
+ console.log(
+ x, x,
+ y, y,
+ )
+ `,
+ "/backwards-reference-nested-function.js": /* js */ `
+ function foo() {
+ const x = y
+ const y = 1
+ console.log(
+ x, x,
+ y, y,
+ )
+ }
+ `,
+ },
+ entryPoints: [
+ "/top-level.js",
+ "/nested-block.js",
+ "/nested-function.js",
+ "/namespace-export.ts",
+ "/comment-before.js",
+ "/directive-before.js",
+ "/semicolon-before.js",
+ "/debugger-before.js",
+ "/type-before.ts",
+ "/exprs-before.js",
+ "/disabled-tdz.js",
+ "/backwards-reference-top-level.js",
+ "/backwards-reference-nested-function.js",
+ ],
+ mode: "passthrough",
+ });
+ itBundled("dce/ConstValueInliningBundle", {
+ // GENERATED
+ files: {
+ "/exported-entry.js": /* js */ `
+ const x_REMOVE = 1
+ export const y_keep = 2
+ console.log(
+ x_REMOVE,
+ y_keep,
+ )
+ `,
+ "/re-exported-entry.js": /* js */ `
+ import { x_REMOVE, y_keep } from './re-exported-constants'
+ console.log(x_REMOVE, y_keep)
+ export { y_keep }
+ `,
+ "/re-exported-constants.js": /* js */ `
+ export const x_REMOVE = 1
+ export const y_keep = 2
+ `,
+ "/re-exported-2-entry.js": `export { y_keep } from './re-exported-2-constants'`,
+ "/re-exported-2-constants.js": /* js */ `
+ export const x_REMOVE = 1
+ export const y_keep = 2
+ `,
+ "/re-exported-star-entry.js": `export * from './re-exported-star-constants'`,
+ "/re-exported-star-constants.js": /* js */ `
+ export const x_keep = 1
+ export const y_keep = 2
+ `,
+ "/cross-module-entry.js": /* js */ `
+ import { x_REMOVE, y_keep } from './cross-module-constants'
+ console.log(x_REMOVE, y_keep)
+ `,
+ "/cross-module-constants.js": /* js */ `
+ export const x_REMOVE = 1
+ foo()
+ export const y_keep = 1
+ export function foo() {
+ return [x_REMOVE, y_keep]
+ }
+ `,
+ "/print-shorthand-entry.js": /* js */ `
+ import { foo, _bar } from './print-shorthand-constants'
+ // The inlined constants must still be present in the output! We don't
+ // want the printer to use the shorthand syntax here to refer to the
+ // name of the constant itself because the constant declaration is omitted.
+ console.log({ foo, _bar })
+ `,
+ "/print-shorthand-constants.js": /* js */ `
+ export const foo = 123
+ export const _bar = -321
+ `,
+ "/circular-import-entry.js": `import './circular-import-constants'`,
+ "/circular-import-constants.js": /* js */ `
+ export const foo = 123 // Inlining should be prevented by the cycle
+ export function bar() {
+ return foo
+ }
+ import './circular-import-cycle'
+ `,
+ "/circular-import-cycle.js": /* js */ `
+ import { bar } from './circular-import-constants'
+ console.log(bar()) // This accesses "foo" before it's initialized
+ `,
+ "/circular-re-export-entry.js": /* js */ `
+ import { baz } from './circular-re-export-constants'
+ console.log(baz)
+ `,
+ "/circular-re-export-constants.js": /* js */ `
+ export const foo = 123 // Inlining should be prevented by the cycle
+ export function bar() {
+ return foo
+ }
+ export { baz } from './circular-re-export-cycle'
+ `,
+ "/circular-re-export-cycle.js": /* js */ `
+ export const baz = 0
+ import { bar } from './circular-re-export-constants'
+ console.log(bar()) // This accesses "foo" before it's initialized
+ `,
+ "/circular-re-export-star-entry.js": `import './circular-re-export-star-constants'`,
+ "/circular-re-export-star-constants.js": /* js */ `
+ export const foo = 123 // Inlining should be prevented by the cycle
+ export function bar() {
+ return foo
+ }
+ export * from './circular-re-export-star-cycle'
+ `,
+ "/circular-re-export-star-cycle.js": /* js */ `
+ import { bar } from './circular-re-export-star-constants'
+ console.log(bar()) // This accesses "foo" before it's initialized
+ `,
+ "/non-circular-export-entry.js": /* js */ `
+ import { foo, bar } from './non-circular-export-constants'
+ console.log(foo, bar())
+ `,
+ "/non-circular-export-constants.js": /* js */ `
+ const foo = 123 // Inlining should be prevented by the cycle
+ function bar() {
+ return foo
+ }
+ export { foo, bar }
+ `,
+ },
+ entryPoints: [
+ "/exported-entry.js",
+ "/re-exported-entry.js",
+ "/re-exported-2-entry.js",
+ "/re-exported-star-entry.js",
+ "/cross-module-entry.js",
+ "/print-shorthand-entry.js",
+ "/circular-import-entry.js",
+ "/circular-re-export-entry.js",
+ "/circular-re-export-star-entry.js",
+ "/non-circular-export-entry.js",
+ ],
+ format: "esm",
+ minifySyntax: true,
+ });
+ itBundled("dce/ConstValueInliningAssign", {
+ // GENERATED
+ files: {
+ "/const-assign.js": /* js */ `
+ const x = 1
+ x = 2
+ `,
+ "/const-update.js": /* js */ `
+ const x = 1
+ x += 2
+ `,
+ },
+ entryPoints: ["/const-assign.js", "/const-update.js"],
+ mode: "passthrough",
+ /* TODO FIX expectedScanLog: `const-assign.js: ERROR: Cannot assign to "x" because it is a constant
+ const-assign.js: NOTE: The symbol "x" was declared a constant here:
+ const-update.js: ERROR: Cannot assign to "x" because it is a constant
+ const-update.js: NOTE: The symbol "x" was declared a constant here:
+ `, */
+ });
+ itBundled("dce/ConstValueInliningDirectEval", {
+ // GENERATED
+ files: {
+ "/top-level-no-eval.js": /* js */ `
+ const x = 1
+ console.log(x, evil('x'))
+ `,
+ "/top-level-eval.js": /* js */ `
+ const x = 1
+ console.log(x, eval('x'))
+ `,
+ "/nested-no-eval.js": /* js */ `
+ (() => {
+ const x = 1
+ console.log(x, evil('x'))
+ })()
+ `,
+ "/nested-eval.js": /* js */ `
+ (() => {
+ const x = 1
+ console.log(x, eval('x'))
+ })()
+ `,
+ "/ts-namespace-no-eval.ts": /* ts */ `
+ namespace y {
+ export const x = 1
+ console.log(x, evil('x'))
+ }
+ `,
+ "/ts-namespace-eval.ts": /* ts */ `
+ namespace z {
+ export const x = 1
+ console.log(x, eval('x'))
+ }
+ `,
+ },
+ entryPoints: [
+ "/top-level-no-eval.js",
+ "/top-level-eval.js",
+ "/nested-no-eval.js",
+ "/nested-eval.js",
+ "/ts-namespace-no-eval.ts",
+ "/ts-namespace-eval.ts",
+ ],
+ mode: "passthrough",
+ });
+ itBundled("dce/CrossModuleConstantFolding", {
+ // GENERATED
+ files: {
+ "/enum-constants.ts": /* ts */ `
+ export enum x {
+ a = 3,
+ b = 6,
+ }
+ `,
+ "/enum-entry.ts": /* ts */ `
+ import { x } from './enum-constants'
+ console.log([
+ +x.b,
+ -x.b,
+ ~x.b,
+ !x.b,
+ typeof x.b,
+ ], [
+ x.a + x.b,
+ x.a - x.b,
+ x.a * x.b,
+ x.a / x.b,
+ x.a % x.b,
+ x.a ** x.b,
+ ], [
+ x.a < x.b,
+ x.a > x.b,
+ x.a <= x.b,
+ x.a >= x.b,
+ x.a == x.b,
+ x.a != x.b,
+ x.a === x.b,
+ x.a !== x.b,
+ ], [
+ x.b << 1,
+ x.b >> 1,
+ x.b >>> 1,
+ ], [
+ x.a & x.b,
+ x.a | x.b,
+ x.a ^ x.b,
+ ], [
+ x.a && x.b,
+ x.a || x.b,
+ x.a ?? x.b,
+ ])
+ `,
+ "/const-constants.js": /* js */ `
+ export const a = 3
+ export const b = 6
+ `,
+ "/const-entry.js": /* js */ `
+ import { a, b } from './const-constants'
+ console.log([
+ +b,
+ -b,
+ ~b,
+ !b,
+ typeof b,
+ ], [
+ a + b,
+ a - b,
+ a * b,
+ a / b,
+ a % b,
+ a ** b,
+ ], [
+ a < b,
+ a > b,
+ a <= b,
+ a >= b,
+ a == b,
+ a != b,
+ a === b,
+ a !== b,
+ ], [
+ b << 1,
+ b >> 1,
+ b >>> 1,
+ ], [
+ a & b,
+ a | b,
+ a ^ b,
+ ], [
+ a && b,
+ a || b,
+ a ?? b,
+ ])
+ `,
+ "/nested-constants.ts": /* ts */ `
+ export const a = 2
+ export const b = 4
+ export const c = 8
+ export enum x {
+ a = 16,
+ b = 32,
+ c = 64,
+ }
+ `,
+ "/nested-entry.ts": /* ts */ `
+ import { a, b, c, x } from './nested-constants'
+ console.log({
+ 'should be 4': ~(~a & ~b) & (b | c),
+ 'should be 32': ~(~x.a & ~x.b) & (x.b | x.c),
+ })
+ `,
+ },
+ entryPoints: ["/enum-entry.ts", "/const-entry.js", "/nested-entry.ts"],
+ });
+ itBundled("dce/MultipleDeclarationTreeShaking", {
+ // GENERATED
+ files: {
+ "/var2.js": /* js */ `
+ var x = 1
+ console.log(x)
+ var x = 2
+ `,
+ "/var3.js": /* js */ `
+ var x = 1
+ console.log(x)
+ var x = 2
+ console.log(x)
+ var x = 3
+ `,
+ "/function2.js": /* js */ `
+ function x() { return 1 }
+ console.log(x())
+ function x() { return 2 }
+ `,
+ "/function3.js": /* js */ `
+ function x() { return 1 }
+ console.log(x())
+ function x() { return 2 }
+ console.log(x())
+ function x() { return 3 }
+ `,
+ },
+ entryPoints: ["/var2.js", "/var3.js", "/function2.js", "/function3.js"],
+ });
+ itBundled("dce/MultipleDeclarationTreeShakingMinifySyntax", {
+ // GENERATED
+ files: {
+ "/var2.js": /* js */ `
+ var x = 1
+ console.log(x)
+ var x = 2
+ `,
+ "/var3.js": /* js */ `
+ var x = 1
+ console.log(x)
+ var x = 2
+ console.log(x)
+ var x = 3
+ `,
+ "/function2.js": /* js */ `
+ function x() { return 1 }
+ console.log(x())
+ function x() { return 2 }
+ `,
+ "/function3.js": /* js */ `
+ function x() { return 1 }
+ console.log(x())
+ function x() { return 2 }
+ console.log(x())
+ function x() { return 3 }
+ `,
+ },
+ entryPoints: ["/var2.js", "/var3.js", "/function2.js", "/function3.js"],
+ });
+ itBundled("dce/PureCallsWithSpread", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ /* @__PURE__ */ foo(...args);
+ /* @__PURE__ */ new foo(...args);
+ `,
+ },
+ });
+ itBundled("dce/TopLevelFunctionInliningWithSpread", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function empty1() {}
+ function empty2() {}
+ function empty3() {}
+
+ function identity1(x) { return x }
+ function identity2(x) { return x }
+ function identity3(x) { return x }
+
+ empty1()
+ empty2(args)
+ empty3(...args)
+
+ identity1()
+ identity2(args)
+ identity3(...args)
+ `,
+ "/inner.js": /* js */ `
+ export function empty1() {}
+ export function empty2() {}
+ export function empty3() {}
+
+ export function identity1(x) { return x }
+ export function identity2(x) { return x }
+ export function identity3(x) { return x }
+ `,
+ "/entry-outer.js": /* js */ `
+ import {
+ empty1,
+ empty2,
+ empty3,
+
+ identity1,
+ identity2,
+ identity3,
+ } from './inner.js'
+
+ empty1()
+ empty2(args)
+ empty3(...args)
+
+ identity1()
+ identity2(args)
+ identity3(...args)
+ `,
+ },
+ entryPoints: ["/entry.js", "/entry-outer.js"],
+ });
+ itBundled("dce/NestedFunctionInliningWithSpread", {
+ // GENERATED
+ files: {
+ "/entry.js": /* js */ `
+ function empty1() {}
+ function empty2() {}
+ function empty3() {}
+
+ function identity1(x) { return x }
+ function identity2(x) { return x }
+ function identity3(x) { return x }
+
+ check(
+ empty1(),
+ empty2(args),
+ empty3(...args),
+
+ identity1(),
+ identity2(args),
+ identity3(...args),
+ )
+ `,
+ "/inner.js": /* js */ `
+ export function empty1() {}
+ export function empty2() {}
+ export function empty3() {}
+
+ export function identity1(x) { return x }
+ export function identity2(x) { return x }
+ export function identity3(x) { return x }
+ `,
+ "/entry-outer.js": /* js */ `
+ import {
+ empty1,
+ empty2,
+ empty3,
+
+ identity1,
+ identity2,
+ identity3,
+ } from './inner.js'
+
+ check(
+ empty1(),
+ empty2(args),
+ empty3(...args),
+
+ identity1(),
+ identity2(args),
+ identity3(...args),
+ )
+ `,
+ },
+ entryPoints: ["/entry.js", "/entry-outer.js"],
+ });
+ itBundled("dce/PackageJsonSideEffectsFalseCrossPlatformSlash", {
+ // GENERATED
+ files: {
+ "/Users/user/project/src/entry.js": /* js */ `
+ import "demo-pkg/foo"
+ import "demo-pkg/bar"
+ `,
+ "/Users/user/project/node_modules/demo-pkg/foo.js": `console.log('foo')`,
+ "/Users/user/project/node_modules/demo-pkg/bar/index.js": `console.log('bar')`,
+ "/Users/user/project/node_modules/demo-pkg/package.json": /* json */ `
+ {
+ "sideEffects": [
+ "**/foo.js",
+ "bar/index.js"
+ ]
+ }
+ `,
+ },
+ });
+ itBundled("dce/TreeShakingJSWithAssociatedCSS", {
+ // GENERATED
+ files: {
+ "/project/test.jsx": /* jsx */ `
+ import { Button } from 'pkg/button'
+ import { Menu } from 'pkg/menu'
+ render(<Button/>)
+ `,
+ "/project/node_modules/pkg/button.js": /* js */ `
+ import './button.css'
+ export let Button
+ `,
+ "/project/node_modules/pkg/button.css": `button { color: red }`,
+ "/project/node_modules/pkg/menu.js": /* js */ `
+ import './menu.css'
+ export let Menu
+ `,
+ "/project/node_modules/pkg/menu.css": `menu { color: red }`,
+ },
+ });
+ itBundled("dce/TreeShakingJSWithAssociatedCSSReExportSideEffectsFalse", {
+ // GENERATED
+ files: {
+ "/project/test.jsx": /* jsx */ `
+ import { Button } from 'pkg'
+ render(<Button/>)
+ `,
+ "/project/node_modules/pkg/entry.js": `export { Button } from './components'`,
+ "/project/node_modules/pkg/package.json": /* json */ `
+ {
+ "main": "./entry.js",
+ "sideEffects": false
+ }
+ `,
+ "/project/node_modules/pkg/components.jsx": /* jsx */ `
+ require('./button.css')
+ export const Button = () => <button/>
+ `,
+ "/project/node_modules/pkg/button.css": `button { color: red }`,
+ },
+ });
+ itBundled("dce/TreeShakingJSWithAssociatedCSSReExportSideEffectsFalseOnlyJS", {
+ // GENERATED
+ files: {
+ "/project/test.jsx": /* jsx */ `
+ import { Button } from 'pkg'
+ render(<Button/>)
+ `,
+ "/project/node_modules/pkg/entry.js": `export { Button } from './components'`,
+ "/project/node_modules/pkg/package.json": /* json */ `
+ {
+ "main": "./entry.js",
+ "sideEffects": ["*.css"]
+ }
+ `,
+ "/project/node_modules/pkg/components.jsx": /* jsx */ `
+ require('./button.css')
+ export const Button = () => <button/>
+ `,
+ "/project/node_modules/pkg/button.css": `button { color: red }`,
+ },
+ });
+ itBundled("dce/TreeShakingJSWithAssociatedCSSExportStarSideEffectsFalse", {
+ // GENERATED
+ files: {
+ "/project/test.jsx": /* jsx */ `
+ import { Button } from 'pkg'
+ render(<Button/>)
+ `,
+ "/project/node_modules/pkg/entry.js": `export * from './components'`,
+ "/project/node_modules/pkg/package.json": /* json */ `
+ {
+ "main": "./entry.js",
+ "sideEffects": false
+ }
+ `,
+ "/project/node_modules/pkg/components.jsx": /* jsx */ `
+ require('./button.css')
+ export const Button = () => <button/>
+ `,
+ "/project/node_modules/pkg/button.css": `button { color: red }`,
+ },
+ });
+ itBundled("dce/TreeShakingJSWithAssociatedCSSExportStarSideEffectsFalseOnlyJS", {
+ // GENERATED
+ files: {
+ "/project/test.jsx": /* jsx */ `
+ import { Button } from 'pkg'
+ render(<Button/>)
+ `,
+ "/project/node_modules/pkg/entry.js": `export * from './components'`,
+ "/project/node_modules/pkg/package.json": /* json */ `
+ {
+ "main": "./entry.js",
+ "sideEffects": ["*.css"]
+ }
+ `,
+ "/project/node_modules/pkg/components.jsx": /* jsx */ `
+ require('./button.css')
+ export const Button = () => <button/>
+ `,
+ "/project/node_modules/pkg/button.css": `button { color: red }`,
+ },
+ });
+ itBundled("dce/TreeShakingJSWithAssociatedCSSUnusedNestedImportSideEffectsFalse", {
+ // GENERATED
+ files: {
+ "/project/test.jsx": /* jsx */ `
+ import { Button } from 'pkg/button'
+ render(<Button/>)
+ `,
+ "/project/node_modules/pkg/package.json": /* json */ `
+ {
+ "sideEffects": false
+ }
+ `,
+ "/project/node_modules/pkg/button.jsx": /* jsx */ `
+ import styles from './styles'
+ export const Button = () => <button/>
+ `,
+ "/project/node_modules/pkg/styles.js": /* js */ `
+ import './styles.css'
+ export default {}
+ `,
+ "/project/node_modules/pkg/styles.css": `button { color: red }`,
+ },
+ });
+ itBundled("dce/TreeShakingJSWithAssociatedCSSUnusedNestedImportSideEffectsFalseOnlyJS", {
+ // GENERATED
+ files: {
+ "/project/test.jsx": /* jsx */ `
+ import { Button } from 'pkg/button'
+ render(<Button/>)
+ `,
+ "/project/node_modules/pkg/package.json": /* json */ `
+ {
+ "sideEffects": ["*.css"]
+ }
+ `,
+ "/project/node_modules/pkg/button.jsx": /* jsx */ `
+ import styles from './styles'
+ export const Button = () => <button/>
+ `,
+ "/project/node_modules/pkg/styles.js": /* js */ `
+ import './styles.css'
+ export default {}
+ `,
+ "/project/node_modules/pkg/styles.css": `button { color: red }`,
+ },
+ });
+});
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-26 22:10:30 +0000