e988a88af0
* Prevent parseForESLint() behavior from changing after parse() is called (fixes https://github.com/babel/babel-eslint/issues/558, fixes https://github.com/eslint/eslint/issues/9767) * Avoid using the enhanced referencer after monkeypatching * Chore: add test for babel/babel-eslint#558 * Pass correct scope analyzer options * fix escope patch and improve tests * remove process.exit(1)
46 lines
1.6 KiB
JavaScript
46 lines
1.6 KiB
JavaScript
"use strict";
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const eslint = require("eslint");
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const assert = require("assert");
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const babelEslint = require("..");
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const espree = require("espree");
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var assertImplementsAST = require("./fixtures/assert-implements-ast");
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describe("https://github.com/babel/babel-eslint/issues/558", () => {
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it("don't crash with eslint-plugin-import", () => {
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const engine = new eslint.CLIEngine({ ignore: false });
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engine.executeOnFiles([
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"test/fixtures/eslint-plugin-import/a.js",
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"test/fixtures/eslint-plugin-import/b.js",
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"test/fixtures/eslint-plugin-import/c.js",
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]);
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});
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/*
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* This test ensures that the enhanced referencer does not get used if eslint-scope has already been
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* monkeypatched, because this causes some correctness issues. For example, if the enhanced referencer
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* is used after the original referencer is monkeypatched, type annotation references are counted twice.
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*/
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it("does not visit type annotations multiple times after monkeypatching and calling parseForESLint()", () => {
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assertImplementsAST(
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espree.parse("foo", { sourceType: "module" }),
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babelEslint.parse("foo", {})
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);
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const parseResult = babelEslint.parseForESLint(
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"type Foo = {}; function x(): Foo {}",
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{
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eslintVisitorKeys: true,
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eslintScopeManager: true,
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}
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);
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assert(parseResult.visitorKeys);
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assert(parseResult.scopeManager);
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const fooVariable = parseResult.scopeManager.getDeclaredVariables(
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parseResult.ast.body[0]
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)[0];
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assert.strictEqual(fooVariable.references.length, 1);
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});
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});
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