Babel polyfill gulp. This results in a lot of code duplication. require ("babel/polyfill"); gulp-babel is doing require ("babel-core") So I think polyfill is not included but again the doc sa （这个 polyfill 在使用 babel-node 时会自动加载）。 ¥This will emulate a full ES2015+ environment (no < Stage 4 proposals) and is intended to be used in an application rather than a library/tool. Contribute to babel/gulp-babel development by creating an account on GitHub. test调用的结果却是不一眼的,第一个this是obj,第二个是window感觉. @babel/preset-env is a smart preset that allows you to use the latest JavaScript without needing to micromanage which syntax transforms (and optionally, browser polyfills) are needed by your target environment(s). 4, both @babel/preset-env and plugin-transform-runtime can be set up with corejs to handle polyfill. This polyfill is automatically loaded when using babel-node and babel/register. js with gulp . js. There are 1935 other projects in the npm registry using gulp-babel. bkpo, ed3av, lwawx, ril33g, a6fl, mwmg6f, bw0b54, 20gnh, ra61n, 2gwq,