c9ac15ae56
* First draft:in js, constructor declaration is preferred * Add tests * initializer of null|undefined gives any in JS Also move this-assignment fixes out of binder. I'm going to put it in the checker instead. * In JS, initializer null|undefined: any, []: any[] * First draft of js prefer-ctor-types overhaul * Update tests, update baselines * Improve readability of constructor-type preference * Cleanup: Remove TODO and duplication * Add noImplicitAny errors * Add comment
37 lines
946 B
TypeScript
37 lines
946 B
TypeScript
// @allowJs: true
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// @checkJs: true
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// @noEmit: true
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// @strictNullChecks: true
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// @noImplicitAny: true
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// @Filename: a.js
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function Installer () {
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// arg: number
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this.arg = 0
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// unknown: string | boolean | null
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this.unknown = null
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// twice: string | undefined
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this.twice = undefined
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this.twice = 'hi'
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// twices: any[] | null
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this.twices = []
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this.twices = null
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}
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Installer.prototype.first = function () {
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this.arg = 'hi' // error
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this.unknown = 'hi' // ok
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this.newProperty = 1 // ok: number | boolean
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this.twice = undefined // ok
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this.twice = 'hi' // ok
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}
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Installer.prototype.second = function () {
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this.arg = false // error
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this.unknown = false // ok
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this.newProperty = false // ok
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this.twice = null // error
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this.twice = false // error
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this.twices.push(1) // error: Object is possibly null
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if (this.twices != null) {
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this.twices.push('hi')
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}
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}
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