88 lines
2.6 KiB
TypeScript
88 lines
2.6 KiB
TypeScript
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import { Module } from "node:module";
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import * as path from "node:path";
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import { runInNewContext } from "node:vm";
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import { expect, it } from "vitest";
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import { analyzeJavaScriptStaticSource } from "./javascriptStaticAnalysis.js";
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const cases = [
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{
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name: "assigned host receiver",
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source: "let holder;(holder=module).require('node:path');",
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outcomes: ["host"],
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possible: true,
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},
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{
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name: "assigned local receiver",
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source:
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"let holder;(holder={require:()=>({kind:'local'})}).require('node:path');",
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outcomes: ["local"],
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possible: false,
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},
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{
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name: "assigned delegate",
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source: "let load;(load=module.require).call(module,'node:path');",
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outcomes: ["host"],
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possible: true,
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},
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{
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name: "conditional assignment value",
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source:
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"let holder;(holder=flag?module:{require:()=>({kind:'local'})}).require('node:path');",
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outcomes: ["local", "host"],
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possible: true,
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},
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{
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name: "logical or assignment",
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source:
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"let holder=flag?{require:()=>({kind:'local'})}:null;(holder||=module).require('node:path');",
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outcomes: ["host", "local"],
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possible: true,
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},
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{
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name: "logical and assignment",
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source: "let holder=flag?{}:null;(holder&&=module).require('node:path');",
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outcomes: ["throw", "host"],
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possible: true,
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},
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{
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name: "nullish assignment",
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source:
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"let holder=flag?{require:()=>({kind:'local'})}:null;(holder??=module).require('node:path');",
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outcomes: ["host", "local"],
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possible: true,
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},
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{
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name: "logical assignment of local receivers",
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source:
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"let holder=flag?{require:()=>({kind:'local'})}:null;(holder||={require:()=>({kind:'local'})}).require('node:path');",
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outcomes: ["local", "local"],
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possible: false,
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},
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];
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it.each(cases)(
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"retains the expression result for $name",
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({ source, outcomes, possible }) => {
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for (const [index, expected] of outcomes.entries()) {
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const execute = () =>
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runInNewContext(source, {
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module: new Module("assignment-loader.cjs"),
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flag: index === 1,
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});
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if (expected === "throw") expect(execute).toThrow();
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else {
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const result = execute();
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expect(result.join === path.join).toBe(expected === "host");
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if (expected === "local") expect(result.kind).toBe("local");
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}
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}
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const analysis = analyzeJavaScriptStaticSource(source);
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expect(analysis.parse_error_count).toBe(0);
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expect(analysis.references).toEqual(
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possible
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? [expect.objectContaining({ kind: "require", specifier: null })]
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: [],
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);
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},
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);
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