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import { expect, test } from "bun:test";
import { _nodeModulePaths, builtinModules, isBuiltin, wrap } from "module";
import Module from "module";
test("builtinModules exists", () => {
expect(Array.isArray(builtinModules)).toBe(true);
expect(builtinModules).toHaveLength(76);
});
test("isBuiltin() works", () => {
expect(isBuiltin("fs")).toBe(true);
expect(isBuiltin("path")).toBe(true);
expect(isBuiltin("crypto")).toBe(true);
expect(isBuiltin("assert")).toBe(true);
expect(isBuiltin("util")).toBe(true);
expect(isBuiltin("events")).toBe(true);
expect(isBuiltin("node:events")).toBe(true);
expect(isBuiltin("node:bacon")).toBe(false);
});
test("module.globalPaths exists", () => {
expect(Array.isArray(require("module").globalPaths)).toBe(true);
});
test("Module exists", () => {
expect(Module).toBeDefined();
});
test("_nodeModulePaths() works", () => {
expect(() => {
_nodeModulePaths();
}).toThrow();
expect(_nodeModulePaths(".").length).toBeGreaterThan(0);
expect(_nodeModulePaths(".").pop()).toBe("/node_modules");
expect(_nodeModulePaths("")).toEqual(_nodeModulePaths("."));
expect(_nodeModulePaths("/")).toEqual(["/node_modules"]);
expect(_nodeModulePaths("/a/b/c/d")).toEqual([
"/a/b/c/d/node_modules",
"/a/b/c/node_modules",
"/a/b/node_modules",
"/a/node_modules",
"/node_modules",
]);
expect(_nodeModulePaths("/a/b/../d")).toEqual(["/a/d/node_modules", "/a/node_modules", "/node_modules"]);
});
test("Module.wrap", () => {
var mod = { exports: {} };
expect(eval(wrap("exports.foo = 1; return 42"))(mod.exports, mod)).toBe(42);
expect(mod.exports.foo).toBe(1);
expect(wrap()).toBe("(function (exports, require, module, __filename, __dirname) { undefined\n});");
});
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