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import { it, expect } from "bun:test";
import { mkdirSync, writeFileSync } from "fs";
import { join, resolve } from "path";
function resolveFrom(from) {
return specifier => import.meta.resolveSync(specifier, from);
}
it("#imports", async () => {
await writePackageJSONImportsFixture();
const baz = await import.meta.resolve("#foo", join(await import.meta.resolve("package-json-imports/baz"), "../"));
expect(baz.endsWith("foo/private-foo.js")).toBe(true);
const subpath = await import.meta.resolve(
"#foo/bar",
join(await import.meta.resolve("package-json-imports/baz"), "../"),
);
expect(subpath.endsWith("foo/private-foo.js")).toBe(true);
const react = await import.meta.resolve(
"#internal-react",
join(await import.meta.resolve("package-json-imports/baz"), "../"),
);
expect(react.endsWith("/react/index.js")).toBe(true);
// Check that #foo is not resolved to the package.json file.
try {
await import.meta.resolve("#foo");
throw new Error("Test failed");
} catch (exception) {
expect(exception instanceof ResolveError).toBe(true);
expect(exception.referrer).toBe(import.meta.path);
expect(exception.name).toBe("ResolveError");
}
// Chcek that package-json-imports/#foo doesn't work
try {
await import.meta.resolve("package-json-imports/#foo");
throw new Error("Test failed");
} catch (exception) {
expect(exception instanceof ResolveError).toBe(true);
expect(exception.referrer).toBe(import.meta.path);
expect(exception.name).toBe("ResolveError");
}
});
it("#imports with wildcard", async () => {
await writePackageJSONImportsFixture();
const run = resolveFrom(resolve(import.meta.dir + "/node_modules/package-json-imports/package.json"));
const wildcard = resolve(import.meta.dir + "/node_modules/package-json-imports/foo/wildcard.js");
expect(run("#foo/wildcard.js")).toBe(wildcard);
expect(run("#foo/extensionless/wildcard")).toBe(wildcard);
});
it("import.meta.resolve", async () => {
expect(await import.meta.resolve("./resolve.test.js")).toBe(import.meta.path);
expect(await import.meta.resolve("./resolve.test.js", import.meta.path)).toBe(import.meta.path);
expect(
// optional second param can be any path, including a dir
await import.meta.resolve("./bun.js/resolve.test.js", join(import.meta.path, "../")),
).toBe(import.meta.path);
// can be a package path
expect((await import.meta.resolve("react", import.meta.path)).length > 0).toBe(true);
// file extensions are optional
expect(await import.meta.resolve("./resolve.test")).toBe(import.meta.path);
// works with tsconfig.json "paths"
expect(await import.meta.resolve("foo/bar")).toBe(join(import.meta.path, "../baz.js"));
// works with package.json "exports"
writePackageJSONExportsFixture();
expect(await import.meta.resolve("package-json-exports/baz")).toBe(
join(import.meta.path, "../node_modules/package-json-exports/foo/bar.js"),
);
// if they never exported /package.json, allow reading from it too
expect(await import.meta.resolve("package-json-exports/package.json")).toBe(
join(import.meta.path, "../node_modules/package-json-exports/package.json"),
);
// if an unnecessary ".js" extension was added, try against /baz
expect(await import.meta.resolve("package-json-exports/baz.js")).toBe(
join(import.meta.path, "../node_modules/package-json-exports/foo/bar.js"),
);
// works with TypeScript compiler edgecases like:
// - If the file ends with .js and it doesn't exist, try again with .ts and .tsx
expect(await import.meta.resolve("./resolve-typescript-file.js")).toBe(
join(import.meta.path, "../resolve-typescript-file.tsx"),
);
expect(await import.meta.resolve("./resolve-typescript-file.tsx")).toBe(
join(import.meta.path, "../resolve-typescript-file.tsx"),
);
// throws a ResolveError on failure
try {
await import.meta.resolve("THIS FILE DOESNT EXIST");
throw new Error("Test failed");
} catch (exception) {
expect(exception instanceof ResolveError).toBe(true);
expect(exception.referrer).toBe(import.meta.path);
expect(exception.name).toBe("ResolveError");
}
});
// the slightly lower level API, which doesn't prefill the second param
// and expects a directory instead of a filepath
it("Bun.resolve", async () => {
expect(await Bun.resolve("./resolve.test.js", import.meta.dir)).toBe(import.meta.path);
});
// synchronous
it("Bun.resolveSync", () => {
expect(Bun.resolveSync("./resolve.test.js", import.meta.dir)).toBe(import.meta.path);
});
it("self-referencing imports works", async () => {
await writePackageJSONExportsFixture();
const baz = await import.meta.resolve("package-json-exports/baz");
const namespace = await import.meta.resolve("package-json-exports/references-baz");
Loader.registry.delete(baz);
Loader.registry.delete(namespace);
var a = await import(baz);
var b = await import(namespace);
expect(a.bar).toBe(1);
expect(b.bar).toBe(1);
Loader.registry.delete(baz);
Loader.registry.delete(namespace);
var a = await import("package-json-exports/baz");
var b = await import("package-json-exports/references-baz");
expect(a.bar).toBe(1);
expect(b.bar).toBe(1);
Loader.registry.delete(baz);
Loader.registry.delete(namespace);
var a = import.meta.require("package-json-exports/baz");
var b = import.meta.require("package-json-exports/references-baz");
expect(a.bar).toBe(1);
expect(b.bar).toBe(1);
Loader.registry.delete(baz);
Loader.registry.delete(namespace);
var a = import.meta.require(baz);
var b = import.meta.require(namespace);
expect(a.bar).toBe(1);
expect(b.bar).toBe(1);
// test that file:// works
Loader.registry.delete(baz);
Loader.registry.delete(namespace);
var a = import.meta.require("file://" + baz);
var b = import.meta.require("file://" + namespace);
expect(a.bar).toBe(1);
expect(b.bar).toBe(1);
});
function writePackageJSONExportsFixture() {
try {
mkdirSync(join(import.meta.dir, "./node_modules/package-json-exports/foo"), {
recursive: true,
});
} catch (exception) {}
writeFileSync(join(import.meta.dir, "./node_modules/package-json-exports/foo/bar.js"), "export const bar = 1;");
writeFileSync(
join(import.meta.dir, "./node_modules/package-json-exports/foo/references-baz.js"),
"export {bar} from 'package-json-exports/baz';",
);
writeFileSync(
join(import.meta.dir, "./node_modules/package-json-exports/package.json"),
JSON.stringify(
{
name: "package-json-exports",
exports: {
"./baz": "./foo/bar.js",
"./references-baz": "./foo/references-baz.js",
},
},
null,
2,
),
);
}
function writePackageJSONImportsFixture() {
try {
mkdirSync(join(import.meta.dir, "./node_modules/package-json-imports/foo"), {
recursive: true,
});
} catch (exception) {}
writeFileSync(join(import.meta.dir, "./node_modules/package-json-imports/foo/bar.js"), "export const bar = 1;");
writeFileSync(
join(import.meta.dir, "./node_modules/package-json-imports/foo/wildcard.js"),
"export const wildcard = 1;",
);
writeFileSync(
join(import.meta.dir, "./node_modules/package-json-imports/foo/private-foo.js"),
"export {bar} from 'package-json-imports/#foo';",
);
writeFileSync(
join(import.meta.dir, "./node_modules/package-json-imports/package.json"),
JSON.stringify(
{
name: "package-json-imports",
exports: {
"./baz": "./foo/bar.js",
},
imports: {
"#foo/bar": "./foo/private-foo.js",
"#foo/*.js": "./foo/*.js",
"#foo/extensionless/*": "./foo/*.js",
"#foo": "./foo/private-foo.js",
"#internal-react": "react",
},
},
null,
2,
),
);
}
|
