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fix(animations): false positive when detecting Node in Webpack builds (#35134) 

We have to do some extra work in the animations module when we identify a Node environment which we determine based on the `process` global. The problem is that by default Webpack will polyfill the `process`, causing us to incorrectly identify it. These changes make it so that the check isn't thrown off by Webpack.

Fixes #35117.

PR Close #35134
This commit is contained in:
Kristiyan Kostadinov 2020-02-03 22:21:37 +01:00 committed by Miško Hevery
parent 1b72fc10eb
commit dc4ae4b4cf
1 changed files with 8 additions and 3 deletions
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11
packages/animations/browser/src/render/shared.ts
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@ -15,12 +15,17 @@ import {AnimationDriver} from '../../src/render/animation_driver';
// types. `process` is just declared locally here as a result. // types. `process` is just declared locally here as a result.
declare const process: any; declare const process: any;
export function isBrowser() { export function isBrowser(): boolean {
return (typeof window !== 'undefined' && typeof window.document !== 'undefined'); return (typeof window !== 'undefined' && typeof window.document !== 'undefined');
} }
export function isNode() { export function isNode(): boolean {
return (typeof process !== 'undefined'); // Checking only for `process` isn't enough to identify whether or not we're in a Node
// environment, because Webpack by default will polyfill the `process`. While we can discern
// that Webpack polyfilled it by looking at `process.browser`, it's very Webpack-specific and
// might not be future-proof. Instead we look at the stringified version of `process` which
// is `[object process]` in Node and `[object Object]` when polyfilled.
return typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
} }
export function optimizeGroupPlayer(players: AnimationPlayer[]): AnimationPlayer { export function optimizeGroupPlayer(players: AnimationPlayer[]): AnimationPlayer {