babel polyfill 支持哪些特性？
what features does the babel polyfill support?
是否有关于 babel-polyfill 支持的功能的列表？我们刚开始使用 babel，我想知道是否可以消除我们目前依赖的某些依赖项，例如 es6-promises & whatwg-fetch。如果 babel-polyfill 支持 promises 当然就不需要包含 es6-promises.
我想经过一些研究我明白了。 Babel-Polyfill is pretty much core.js + Regenerator Runtime . Look at those projects individually to see what features will be polyfilled. For example, at the time of this writing core.js:
获取：
window.fetch is not a cross-platform feature, in some environments it
makes no sense. For this reason, I don't think it should be in
core-js. Looking at a large number of requests it may be added in the
future. Now you can use, for example, this polyfill.
承诺：
Modular standard library for JavaScript. Includes polyfills for
ECMAScript 5, ECMAScript 6: promises, symbols, collections, iterators,
typed arrays, ECMAScript 7+ proposals, setImmediate, etc.
所以我需要 whatwg-fetch 但我不需要 es6-promises。在 IE11（没有承诺）中测试过，所以它似乎可以正常工作。
是否有关于 babel-polyfill 支持的功能的列表？我们刚开始使用 babel，我想知道是否可以消除我们目前依赖的某些依赖项，例如 es6-promises & whatwg-fetch。如果 babel-polyfill 支持 promises 当然就不需要包含 es6-promises.
我想经过一些研究我明白了。 Babel-Polyfill is pretty much core.js + Regenerator Runtime . Look at those projects individually to see what features will be polyfilled. For example, at the time of this writing core.js:
获取：
window.fetch is not a cross-platform feature, in some environments it makes no sense. For this reason, I don't think it should be in core-js. Looking at a large number of requests it may be added in the future. Now you can use, for example, this polyfill.
承诺：
Modular standard library for JavaScript. Includes polyfills for ECMAScript 5, ECMAScript 6: promises, symbols, collections, iterators, typed arrays, ECMAScript 7+ proposals, setImmediate, etc.
所以我需要 whatwg-fetch 但我不需要 es6-promises。在 IE11（没有承诺）中测试过，所以它似乎可以正常工作。