(process.env.TEST_TYPE === "cov" ? describe.skip : describe)( "babel-preset-env-standalone", () => { const Babel = require("@babel/standalone/babel"); jest.mock("Babel", () => require("@babel/standalone/babel"), { virtual: true, }); require("../babel-preset-env"); it("works w/o targets", () => { const output = Babel.transform("const a = 1;", { sourceType: "script", presets: ["env"], }).code; expect(output).toBe("var a = 1;"); }); it("doesn't transpile `const` with chrome 60", () => { const output = Babel.transform("const a = 1;", { sourceType: "script", presets: [ [ "env", { targets: { chrome: 60, }, }, ], ], }).code; expect(output).toBe("const a = 1;"); }); it("transpiles `const` with chrome 60 and preset-es2015", () => { const output = Babel.transform("const a = 1;", { sourceType: "script", presets: [ [ "env", { targets: { chrome: 60, }, }, ], "es2015", ], }).code; expect(output).toBe("var a = 1;"); }); it("uses transform-new-targets plugin", () => { const output = Babel.transform("function Foo() {new.target}", { sourceType: "script", presets: ["env"], }).code; expect(output).toBe( "function Foo() {\n this instanceof Foo ? this.constructor : void 0;\n}", ); }); }, );