import rule from "../../src/rules/no-undefined-identifier"; import { RuleTester } from "eslint"; const error = "Use path.scope.buildUndefinedNode() to create an undefined identifier directly."; const ruleTester = new RuleTester({ parserOptions: { sourceType: "module" }, }); ruleTester.run("no-undefined-identifier", rule, { valid: [ `_.identifier("undefined")`, `_.Identifier("undefined")`, `import * as t from "lib"; t.identifier("undefined");`, `function f(_) { _.types.identifier("undefined"); }`, `import * as t from "@babel/types"; t.identifier("not_undefined");`, `path.scope.buildUndefinedNode();`, ], invalid: [ { code: `import { identifier } from "@babel/types"; identifier("undefined");`, errors: [error], }, { code: `import { Identifier } from "@babel/types"; Identifier("undefined");`, errors: [error], }, { code: `import * as t from "@babel/types"; t.identifier("undefined");`, errors: [error], }, { code: `import * as t from "@babel/types"; var { identifier } = t; identifier("undefined");`, errors: [error], }, { code: `import { identifier as id } from "@babel/types"; id("undefined");`, errors: [error], }, { code: `import * as babel from "@babel/core"; babel.types.identifier("undefined");`, errors: [error], }, { code: `import { types } from "@babel/core"; types.identifier("undefined");`, errors: [error], }, { code: `import { types as t } from "@babel/core"; t.identifier("undefined");`, errors: [error], }, { code: `export default function plugin(babel) { babel.types.identifier("undefined") }`, errors: [error], }, { code: `export default function plugin({ types }) { types.identifier("undefined") }`, errors: [error], }, { code: `export default function plugin({ types: t }) { t.identifier("undefined") }`, errors: [error], }, { code: `export default ({ types }) => { types.identifier("undefined") }`, errors: [error], }, { code: `module.exports = function plugin({ types }) { types.identifier("undefined") }`, errors: [error], }, { code: `import { declare } from "@babel/helper-plugin-utils"; declare(({ types }) => { types.identifier("undefined") });`, errors: [error], }, ], });