mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-24 06:14:01 +08:00
Chris Tate
5a495dc02c
- Share native parsing, declaration projection, and npm capability analysis through explicit frontend services. - Scope module analysis caches and parser connections to their owning program lifecycle. - Preserve global fetch reads in destructuring defaults across embedded npm modules.
81 lines
4.2 KiB
TypeScript
81 lines
4.2 KiB
TypeScript
import { npmFetchCases } from "./npm-fetch-cases.js";
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import { expect, test } from "vitest";
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import {
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embeddedModulesUsingGlobalFetch,
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} from "../src/frontend/npm-fetch-node.js";
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import type { EmbeddedModule } from "../src/frontend/npm.js";
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function js(key: string, source: string): EmbeddedModule {
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return { key: `/${key}.js`, source, format: "cjs" };
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}
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test("embedded fetch capability analysis ignores text and local bindings", () => {
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const modules = [
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js("comment", "// fetch(url)\nmodule.exports = 1;"),
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js("string", "module.exports = 'fetch(url)';"),
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js("property", "const value = { fetch: 1 }; module.exports = value.fetch;"),
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js("local", "const fetch = (x) => x; module.exports = fetch('local');"),
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js("parameter", "module.exports = function (fetch) { return fetch('local'); };"),
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js("import", "import fetch from 'a-local-package'; export default fetch('local');"),
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js("named-import", "import { fetch as request } from 'pure-local'; export default request('local');"),
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js("named-reexport", "export { fetch as request } from 'pure-local';"),
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js("shadow-global", "module.exports = function (globalThis) { return globalThis.fetch('local'); };"),
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js("object-destructure", "const source = { fetch: 1 }; const { fetch: request } = source; module.exports = request;"),
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js("local-alias", "const source = { fetch: 1 }; const root = source; module.exports = root.fetch;"),
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js("shadowed-alias", "const root = globalThis; module.exports = function (root) { return root.fetch; };"),
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js("label", "fetch: for (;;) { break fetch; } module.exports = 1;"),
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];
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expect([...embeddedModulesUsingGlobalFetch(modules)]).toEqual([]);
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});
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test("embedded fetch capability analysis finds global reads", () => {
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const modules = [
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js("bare", "module.exports = fetch('https://example.com');"),
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js("shorthand-property", "module.exports = { fetch };"),
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js("global-this", "module.exports = globalThis.fetch('https://example.com');"),
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js("global", "module.exports = global['fetch']('https://example.com');"),
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js("destructure", "const { fetch } = globalThis; module.exports = fetch;"),
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js("destructure-alias", "const { fetch: request } = global; module.exports = request;"),
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js("destructure-computed", "const { ['fetch']: request } = globalThis; module.exports = request;"),
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js("destructure-assign", "let request; ({ fetch: request } = globalThis); module.exports = request;"),
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js("global-alias", "const root = globalThis; module.exports = root.fetch;"),
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js("global-logical-alias", "const root = globalThis || global; module.exports = root.fetch;"),
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js("global-nullish-alias", "const root = globalThis ?? global; module.exports = root.fetch;"),
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js("global-conditional-alias", "const root = typeof globalThis === 'undefined' ? global : globalThis; module.exports = root.fetch;"),
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js("global-mutable-alias", "let root = globalThis; module.exports = root.fetch;"),
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js("global-alias-chain", "const root = global; const platform = root; module.exports = platform['fetch'];"),
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js("global-alias-destructure", "const root = globalThis; const { fetch: request } = root; module.exports = request;"),
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{
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...js("windows-path", "module.exports = fetch('https://example.com');"),
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key: "C:\\pkg\\index.js",
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},
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];
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expect([...embeddedModulesUsingGlobalFetch(modules)]).toEqual([
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"/bare.js",
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"/shorthand-property.js",
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"/global-this.js",
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"/global.js",
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"/destructure.js",
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"/destructure-alias.js",
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"/destructure-computed.js",
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"/destructure-assign.js",
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"/global-alias.js",
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"/global-logical-alias.js",
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"/global-nullish-alias.js",
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"/global-conditional-alias.js",
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"/global-mutable-alias.js",
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"/global-alias-chain.js",
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"/global-alias-destructure.js",
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"C:\\pkg\\index.js",
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]);
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});
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test("global fetch capability matrix keeps local names and global aliases distinct", () => {
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const modules: EmbeddedModule[] = npmFetchCases.map((item, index) => ({ key: `${index}.js`, source: item.source, format: "cjs" }));
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const found = embeddedModulesUsingGlobalFetch(modules);
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for (let i = 0; i < modules.length; i++) expect(found.has(modules[i]!.key), npmFetchCases[i]!.name).toBe(npmFetchCases[i]!.usesFetch);
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});
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