50 lines
2.0 KiB
TypeScript
50 lines
2.0 KiB
TypeScript
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import { execFileSync } from "node:child_process";
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import { writeFile } from "node:fs/promises";
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import { join } from "node:path";
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import { expect, it } from "vitest";
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import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";
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it.each([
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["native main", "require.main.require('node:path');", 1],
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["captured main", "const main=require.main;main.require('node:path');", 1],
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["native process main", "process.mainModule.require('node:path');", 1],
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[
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"captured process main",
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"const main=process.mainModule;main.require('node:path');",
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1,
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],
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[
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"captured process delegate",
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"const main=process.mainModule;const load=main.require;load.call(main,'node:path');",
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1,
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],
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[
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"shared deep child local write",
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"const old={child:{inner:{make:()=>module}}};const box={...old};old.child={inner:box.child.inner};old.child.inner.make=()=>({require(){}});box.child.inner.make().require('node:path');",
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0,
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],
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[
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"shared deep child host write",
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"const old={child:{inner:{make:()=>({})}}};const box={...old};old.child={inner:box.child.inner};old.child.inner.make=()=>module;box.child.inner.make().require('node:path');",
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1,
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],
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] as const)(
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"observes real CommonJS Module loading for %s",
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async (_name, source, loads) => {
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const root = await createTestTempDirectory("rea-main-module-source-");
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const entry = join(root, "entry.cjs");
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await writeFile(
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entry,
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`if(process.mainModule!==module||require.main!==module)throw Error('Native main-module identity changed');const original=module.require;let loads=0;module.require=function(...args){loads++;return Reflect.apply(original,this,args)};const out=eval(${JSON.stringify(source)});process.stdout.write(JSON.stringify({loads,native:typeof out?.join==='function'}));`,
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);
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const observed = execFileSync(process.execPath, [entry], {
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encoding: "utf8",
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timeout: 5_000,
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});
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expect(JSON.parse(observed) as unknown).toEqual({
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loads,
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native: loads === 1,
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});
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},
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);
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