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KingwlKingwl
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Add more case
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lines changed

‎src/compiler/binder.ts

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@@ -915,9 +915,6 @@ namespace ts {
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function isNarrowingBinaryExpression(expr: BinaryExpression) {
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switch (expr.operatorToken.kind) {
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case SyntaxKind.EqualsToken:
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case SyntaxKind.BarBarEqualsToken:
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case SyntaxKind.AmpersandAmpersandEqualsToken:
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case SyntaxKind.QuestionQuestionEqualsToken:
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return containsNarrowableReference(expr.left);
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case SyntaxKind.EqualsEqualsToken:
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case SyntaxKind.ExclamationEqualsToken:
@@ -942,9 +939,6 @@ namespace ts {
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case SyntaxKind.BinaryExpression:
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switch ((<BinaryExpression>expr).operatorToken.kind) {
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case SyntaxKind.EqualsToken:
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case SyntaxKind.BarBarEqualsToken:
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case SyntaxKind.AmpersandAmpersandEqualsToken:
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case SyntaxKind.QuestionQuestionEqualsToken:
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return isNarrowableOperand((<BinaryExpression>expr).left);
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case SyntaxKind.CommaToken:
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return isNarrowableOperand((<BinaryExpression>expr).right);

‎tests/baselines/reference/logicalAssignment8(target=es2015).errors.txt

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tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts(12,5): error TS2532: Object is possibly 'undefined'.
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==== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts (1 errors) ====
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declare const bar: { value?: number[] } | undefined
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function foo1(results: number[] | undefined) {
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(results ||= bar?.value ?? []).push(100);
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}
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function foo2(results: number[] | undefined) {
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(results ??= bar?.value ?? []).push(100);
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}
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function foo3(results: number[] | undefined) {
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(results &&= bar?.value ?? []).push(100);
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2532: Object is possibly 'undefined'.
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}

‎tests/baselines/reference/logicalAssignment8(target=es2015).js

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//// [logicalAssignment8.ts]
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declare const bar: { value?: number[] } | undefined
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function foo1(results: number[] | undefined) {
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(results ||= bar?.value ?? []).push(100);
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}
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function foo2(results: number[] | undefined) {
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(results ??= bar?.value ?? []).push(100);
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}
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function foo3(results: number[] | undefined) {
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(results &&= bar?.value ?? []).push(100);
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}
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//// [logicalAssignment8.js]
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"use strict";
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function foo1(results) {
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var _a;
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(results || (results = (_a = bar === null || bar === void 0 ? void 0 : bar.value) !== null && _a !== void 0 ? _a : [])).push(100);
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}
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function foo2(results) {
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var _a;
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(results !== null && results !== void 0 ? results : (results = (_a = bar === null || bar === void 0 ? void 0 : bar.value) !== null && _a !== void 0 ? _a : [])).push(100);
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}
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function foo3(results) {
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var _a;
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(results && (results = (_a = bar === null || bar === void 0 ? void 0 : bar.value) !== null && _a !== void 0 ? _a : [])).push(100);
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}

‎tests/baselines/reference/logicalAssignment8(target=es2015).symbols

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=== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts ===
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declare const bar: { value?: number[] } | undefined
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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function foo1(results: number[] | undefined) {
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>foo1 : Symbol(foo1, Decl(logicalAssignment8.ts, 0, 51))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 2, 14))
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(results ||= bar?.value ?? []).push(100);
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>(results ||= bar?.value ?? []).push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 2, 14))
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>bar?.value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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}
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function foo2(results: number[] | undefined) {
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>foo2 : Symbol(foo2, Decl(logicalAssignment8.ts, 4, 1))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 6, 14))
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(results ??= bar?.value ?? []).push(100);
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>(results ??= bar?.value ?? []).push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 6, 14))
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>bar?.value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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}
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function foo3(results: number[] | undefined) {
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>foo3 : Symbol(foo3, Decl(logicalAssignment8.ts, 8, 1))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 10, 14))
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(results &&= bar?.value ?? []).push(100);
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>(results &&= bar?.value ?? []).push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 10, 14))
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>bar?.value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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}

‎tests/baselines/reference/logicalAssignment8(target=es2015).types

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=== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts ===
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declare const bar: { value?: number[] } | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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function foo1(results: number[] | undefined) {
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>foo1 : (results: number[] | undefined) => void
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>results : number[] | undefined
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(results ||= bar?.value ?? []).push(100);
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>(results ||= bar?.value ?? []).push(100) : number
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>(results ||= bar?.value ?? []).push : (...items: number[]) => number
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>(results ||= bar?.value ?? []) : number[]
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>results ||= bar?.value ?? [] : number[]
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>results : number[] | undefined
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>bar?.value ?? [] : number[]
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>bar?.value : number[] | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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>[] : never[]
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>push : (...items: number[]) => number
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>100 : 100
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}
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function foo2(results: number[] | undefined) {
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>foo2 : (results: number[] | undefined) => void
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>results : number[] | undefined
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(results ??= bar?.value ?? []).push(100);
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>(results ??= bar?.value ?? []).push(100) : number
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>(results ??= bar?.value ?? []).push : (...items: number[]) => number
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>(results ??= bar?.value ?? []) : number[]
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>results ??= bar?.value ?? [] : number[]
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>results : number[] | undefined
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>bar?.value ?? [] : number[]
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>bar?.value : number[] | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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>[] : never[]
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>push : (...items: number[]) => number
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>100 : 100
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}
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function foo3(results: number[] | undefined) {
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>foo3 : (results: number[] | undefined) => void
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>results : number[] | undefined
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(results &&= bar?.value ?? []).push(100);
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>(results &&= bar?.value ?? []).push(100) : number
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>(results &&= bar?.value ?? []).push : (...items: number[]) => number
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>(results &&= bar?.value ?? []) : number[] | undefined
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>results &&= bar?.value ?? [] : number[] | undefined
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>results : number[] | undefined
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>bar?.value ?? [] : number[]
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>bar?.value : number[] | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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>[] : never[]
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>push : (...items: number[]) => number
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>100 : 100
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}

‎tests/baselines/reference/logicalAssignment8(target=es2020).errors.txt

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tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts(12,5): error TS2532: Object is possibly 'undefined'.
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==== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts (1 errors) ====
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declare const bar: { value?: number[] } | undefined
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function foo1(results: number[] | undefined) {
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(results ||= bar?.value ?? []).push(100);
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}
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function foo2(results: number[] | undefined) {
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(results ??= bar?.value ?? []).push(100);
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}
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function foo3(results: number[] | undefined) {
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(results &&= bar?.value ?? []).push(100);
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2532: Object is possibly 'undefined'.
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}

‎tests/baselines/reference/logicalAssignment8(target=es2020).js

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//// [logicalAssignment8.ts]
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declare const bar: { value?: number[] } | undefined
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function foo1(results: number[] | undefined) {
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(results ||= bar?.value ?? []).push(100);
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}
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function foo2(results: number[] | undefined) {
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(results ??= bar?.value ?? []).push(100);
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}
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function foo3(results: number[] | undefined) {
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(results &&= bar?.value ?? []).push(100);
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}
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//// [logicalAssignment8.js]
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"use strict";
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function foo1(results) {
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(results || (results = bar?.value ?? [])).push(100);
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}
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function foo2(results) {
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(results ?? (results = bar?.value ?? [])).push(100);
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}
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function foo3(results) {
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(results && (results = bar?.value ?? [])).push(100);
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}

‎tests/baselines/reference/logicalAssignment8(target=es2020).symbols

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=== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts ===
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declare const bar: { value?: number[] } | undefined
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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function foo1(results: number[] | undefined) {
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>foo1 : Symbol(foo1, Decl(logicalAssignment8.ts, 0, 51))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 2, 14))
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(results ||= bar?.value ?? []).push(100);
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>(results ||= bar?.value ?? []).push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 2, 14))
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>bar?.value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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}
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function foo2(results: number[] | undefined) {
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>foo2 : Symbol(foo2, Decl(logicalAssignment8.ts, 4, 1))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 6, 14))
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(results ??= bar?.value ?? []).push(100);
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>(results ??= bar?.value ?? []).push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 6, 14))
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>bar?.value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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}
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function foo3(results: number[] | undefined) {
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>foo3 : Symbol(foo3, Decl(logicalAssignment8.ts, 8, 1))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 10, 14))
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(results &&= bar?.value ?? []).push(100);
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>(results &&= bar?.value ?? []).push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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>results : Symbol(results, Decl(logicalAssignment8.ts, 10, 14))
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>bar?.value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>bar : Symbol(bar, Decl(logicalAssignment8.ts, 0, 13))
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>value : Symbol(value, Decl(logicalAssignment8.ts, 0, 20))
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>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
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}

‎tests/baselines/reference/logicalAssignment8(target=es2020).types

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=== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts ===
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declare const bar: { value?: number[] } | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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function foo1(results: number[] | undefined) {
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>foo1 : (results: number[] | undefined) => void
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>results : number[] | undefined
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(results ||= bar?.value ?? []).push(100);
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>(results ||= bar?.value ?? []).push(100) : number
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>(results ||= bar?.value ?? []).push : (...items: number[]) => number
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>(results ||= bar?.value ?? []) : number[]
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>results ||= bar?.value ?? [] : number[]
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>results : number[] | undefined
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>bar?.value ?? [] : number[]
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>bar?.value : number[] | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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>[] : never[]
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>push : (...items: number[]) => number
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>100 : 100
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}
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function foo2(results: number[] | undefined) {
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>foo2 : (results: number[] | undefined) => void
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>results : number[] | undefined
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(results ??= bar?.value ?? []).push(100);
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>(results ??= bar?.value ?? []).push(100) : number
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>(results ??= bar?.value ?? []).push : (...items: number[]) => number
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>(results ??= bar?.value ?? []) : number[]
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>results ??= bar?.value ?? [] : number[]
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>results : number[] | undefined
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>bar?.value ?? [] : number[]
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>bar?.value : number[] | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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>[] : never[]
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>push : (...items: number[]) => number
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>100 : 100
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}
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function foo3(results: number[] | undefined) {
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>foo3 : (results: number[] | undefined) => void
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>results : number[] | undefined
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(results &&= bar?.value ?? []).push(100);
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>(results &&= bar?.value ?? []).push(100) : number
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>(results &&= bar?.value ?? []).push : (...items: number[]) => number
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>(results &&= bar?.value ?? []) : number[] | undefined
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>results &&= bar?.value ?? [] : number[] | undefined
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>results : number[] | undefined
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>bar?.value ?? [] : number[]
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>bar?.value : number[] | undefined
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>bar : { value?: number[] | undefined; } | undefined
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>value : number[] | undefined
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>[] : never[]
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>push : (...items: number[]) => number
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>100 : 100
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}

‎tests/baselines/reference/logicalAssignment8(target=esnext).errors.txt

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tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts(12,5): error TS2532: Object is possibly 'undefined'.
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==== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment8.ts (1 errors) ====
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declare const bar: { value?: number[] } | undefined
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function foo1(results: number[] | undefined) {
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(results ||= bar?.value ?? []).push(100);
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}
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function foo2(results: number[] | undefined) {
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(results ??= bar?.value ?? []).push(100);
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}
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function foo3(results: number[] | undefined) {
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(results &&= bar?.value ?? []).push(100);
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2532: Object is possibly 'undefined'.
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}

‎tests/baselines/reference/logicalAssignment8(target=esnext).js

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//// [logicalAssignment8.ts]
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declare const bar: { value?: number[] } | undefined
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function foo1(results: number[] | undefined) {
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(results ||= bar?.value ?? []).push(100);
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}
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function foo2(results: number[] | undefined) {
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(results ??= bar?.value ?? []).push(100);
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}
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function foo3(results: number[] | undefined) {
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(results &&= bar?.value ?? []).push(100);
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}
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//// [logicalAssignment8.js]
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"use strict";
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function foo1(results) {
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(results ||= bar?.value ?? []).push(100);
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}
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function foo2(results) {
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(results ??= bar?.value ?? []).push(100);
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}
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function foo3(results) {
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(results &&= bar?.value ?? []).push(100);
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}

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