Microsoft/TypeScript

Assignments to global objects in Javascript should be global declarations

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#22,446 opened on 2018年3月9日

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 (3 comments) (0 reactions) (0 assignees)TypeScript (48,455 stars) (6,726 forks)batch import
BugDomain: JavaScriptEffort: ModerateExperience EnhancementHelp WantedRescheduled

説明

// @noEmit: true
// @allowJs: true
// @checkJs: true
// @Filename: a.js
global.x = 1
window.y = 2
this.z = 3

var n = x + y + z

Expected behavior: No error, and x, y and z are visible globally.

Actual behavior: Errors:

  1. Can't find name 'global'
  2. 'Window' has no property 'y'
  3. Cannot find name 'x', 'y' or 'z'

Ideally, global should only be visible when targetting node and window should only be visible when targetting the browser. It's not a requirement, though.

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