TypeScript/tests/cases/conformance/salsa/typeFromPropertyAssignment22.ts

// @allowJs: true
// @checkJs: true
// @noEmit: true
// @strictNullChecks: true
// @Filename: npm-install.js
function Installer () {
    this.args = 0
}
Installer.prototype.loadArgMetadata = function (next) {
    // ArrowFunction isn't treated as a this-container
    (args) => {
        this.args = 'hi'
        this.newProperty = 1
    }
}
var i = new Installer()
i.newProperty = i.args // ok, number ==> number | undefined
Correctly track thisContainer for this-property-assignments in JS nested containers (#22779) * Track thisContainer for this-property-assignments in JS Previously it would update on every block, not just those that could bind `this`. In addition, if the constructor symbol still can't be found, then no binding happens. This is usually OK because people don't add new properties in methods too often. * Update additional baselines * Add lib:dom to new test * Address PR comments * Correct new name for saveThisParentContainer 2018-03-22 17:54:43 +01:00			`// @allowJs: true`
			`// @checkJs: true`
			`// @noEmit: true`
			`// @strictNullChecks: true`
			`// @Filename: npm-install.js`
			`function Installer () {`
			`this.args = 0`
			`}`
			`Installer.prototype.loadArgMetadata = function (next) {`
			`// ArrowFunction isn't treated as a this-container`
			`(args) => {`
			`this.args = 'hi'`
			`this.newProperty = 1`
			`}`
			`}`
			`var i = new Installer()`
In JS, this assignments in constructors are preferred and nullable initializers become any (#22882) * 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 2018-03-26 22:42:34 +02:00			`i.newProperty = i.args // ok, number ==> number \| undefined`