mirror of
https://github.com/microsoft/TypeScript.git
synced 2025-11-18 17:21:48 +00:00
Sheetal Nandi
+15
-13
@@ -2873,7 +2873,7 @@ namespace ts {
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// If the declaration specifies a binding pattern, use the type implied by the binding pattern
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if (isBindingPattern(declaration.name)) {
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return getTypeFromBindingPattern(<BindingPattern>declaration.name, /*includePatternInType*/ false);
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return getTypeFromBindingPattern(<BindingPattern>declaration.name, /*includePatternInType*/ false, /*reportErrors*/ true);
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}
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// No type specified and nothing can be inferred
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@@ -2883,23 +2883,25 @@ namespace ts {
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// Return the type implied by a binding pattern element. This is the type of the initializer of the element if
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// one is present. Otherwise, if the element is itself a binding pattern, it is the type implied by the binding
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// pattern. Otherwise, it is the type any.
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function getTypeFromBindingElement(element: BindingElement, includePatternInType?: boolean): Type {
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function getTypeFromBindingElement(element: BindingElement, includePatternInType?: boolean, reportErrors?: boolean): Type {
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if (element.initializer) {
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const type = checkExpressionCached(element.initializer);
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reportErrorsFromWidening(element, type);
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if (reportErrors) {
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reportErrorsFromWidening(element, type);
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}
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return getWidenedType(type);
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}
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if (isBindingPattern(element.name)) {
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return getTypeFromBindingPattern(<BindingPattern>element.name, includePatternInType);
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return getTypeFromBindingPattern(<BindingPattern>element.name, includePatternInType, reportErrors);
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}
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if (compilerOptions.noImplicitAny && !declarationBelongsToPrivateAmbientMember(element)) {
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if (reportErrors && compilerOptions.noImplicitAny && !declarationBelongsToPrivateAmbientMember(element)) {
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reportImplicitAnyError(element, anyType);
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}
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return anyType;
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}
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// Return the type implied by an object binding pattern
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function getTypeFromObjectBindingPattern(pattern: BindingPattern, includePatternInType: boolean): Type {
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function getTypeFromObjectBindingPattern(pattern: BindingPattern, includePatternInType: boolean, reportErrors: boolean): Type {
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const members: SymbolTable = {};
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let hasComputedProperties = false;
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forEach(pattern.elements, e => {
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@@ -2913,7 +2915,7 @@ namespace ts {
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const text = getTextOfPropertyName(name);
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const flags = SymbolFlags.Property | SymbolFlags.Transient | (e.initializer ? SymbolFlags.Optional : 0);
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const symbol = <TransientSymbol>createSymbol(flags, text);
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symbol.type = getTypeFromBindingElement(e, includePatternInType);
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symbol.type = getTypeFromBindingElement(e, includePatternInType, reportErrors);
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symbol.bindingElement = e;
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members[symbol.name] = symbol;
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});
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@@ -2928,13 +2930,13 @@ namespace ts {
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}
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// Return the type implied by an array binding pattern
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function getTypeFromArrayBindingPattern(pattern: BindingPattern, includePatternInType: boolean): Type {
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function getTypeFromArrayBindingPattern(pattern: BindingPattern, includePatternInType: boolean, reportErrors: boolean): Type {
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const elements = pattern.elements;
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if (elements.length === 0 || elements[elements.length - 1].dotDotDotToken) {
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return languageVersion >= ScriptTarget.ES6 ? createIterableType(anyType) : anyArrayType;
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}
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// If the pattern has at least one element, and no rest element, then it should imply a tuple type.
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const elementTypes = map(elements, e => e.kind === SyntaxKind.OmittedExpression ? anyType : getTypeFromBindingElement(e, includePatternInType));
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const elementTypes = map(elements, e => e.kind === SyntaxKind.OmittedExpression ? anyType : getTypeFromBindingElement(e, includePatternInType, reportErrors));
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if (includePatternInType) {
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const result = createNewTupleType(elementTypes);
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result.pattern = pattern;
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@@ -2950,10 +2952,10 @@ namespace ts {
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// used as the contextual type of an initializer associated with the binding pattern. Also, for a destructuring
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// parameter with no type annotation or initializer, the type implied by the binding pattern becomes the type of
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// the parameter.
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function getTypeFromBindingPattern(pattern: BindingPattern, includePatternInType?: boolean): Type {
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function getTypeFromBindingPattern(pattern: BindingPattern, includePatternInType?: boolean, reportErrors?: boolean): Type {
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return pattern.kind === SyntaxKind.ObjectBindingPattern
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? getTypeFromObjectBindingPattern(pattern, includePatternInType)
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: getTypeFromArrayBindingPattern(pattern, includePatternInType);
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? getTypeFromObjectBindingPattern(pattern, includePatternInType, reportErrors)
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: getTypeFromArrayBindingPattern(pattern, includePatternInType, reportErrors);
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}
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// Return the type associated with a variable, parameter, or property declaration. In the simple case this is the type
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@@ -8467,7 +8469,7 @@ namespace ts {
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}
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}
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if (isBindingPattern(declaration.name)) {
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return getTypeFromBindingPattern(<BindingPattern>declaration.name, /*includePatternInType*/ true);
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return getTypeFromBindingPattern(<BindingPattern>declaration.name, /*includePatternInType*/ true, /*reportErrors*/ false);
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}
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if (isBindingPattern(declaration.parent)) {
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const parentDeclaration = declaration.parent.parent;
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@@ -1,63 +0,0 @@
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(1,6): error TS7031: Binding element 'a' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(1,9): error TS7031: Binding element 'b' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(1,12): error TS7031: Binding element 'c' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(3,6): error TS7031: Binding element 'a2' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(3,22): error TS7031: Binding element 'b2' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(3,38): error TS7031: Binding element 'c2' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(5,6): error TS7031: Binding element 'a4' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(5,31): error TS7031: Binding element 'b4' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(7,6): error TS7031: Binding element 'x' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(7,9): error TS7031: Binding element 'y' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(7,12): error TS7031: Binding element 'z' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(9,6): error TS7031: Binding element 'x2' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(9,22): error TS7031: Binding element 'y2' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(9,38): error TS7031: Binding element 'z2' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(11,6): error TS7031: Binding element 'x4' implicitly has an 'any' type.
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tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts(11,37): error TS7031: Binding element 'y4' implicitly has an 'any' type.
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==== tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts (16 errors) ====
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let [a, b, c] = [1, 2, 3]; // no error
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~
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!!! error TS7031: Binding element 'a' implicitly has an 'any' type.
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~
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!!! error TS7031: Binding element 'b' implicitly has an 'any' type.
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~
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!!! error TS7031: Binding element 'c' implicitly has an 'any' type.
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let [a1 = 10, b1 = 10, c1 = 10] = [1, 2, 3]; // no error
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let [a2 = undefined, b2 = undefined, c2 = undefined] = [1, 2, 3]; // no error
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~~
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!!! error TS7031: Binding element 'a2' implicitly has an 'any' type.
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~~
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!!! error TS7031: Binding element 'b2' implicitly has an 'any' type.
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~~
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!!! error TS7031: Binding element 'c2' implicitly has an 'any' type.
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let [a3 = <any>undefined, b3 = <any>null, c3 = <any>undefined] = [1, 2, 3]; // no error
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let [a4] = [<any>undefined], [b4] = [<any>null], c4 = <any>undefined, d4 = <any>null; // no error
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~~
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!!! error TS7031: Binding element 'a4' implicitly has an 'any' type.
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~~
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!!! error TS7031: Binding element 'b4' implicitly has an 'any' type.
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let {x, y, z} = { x: 1, y: 2, z: 3 }; // no error
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~
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!!! error TS7031: Binding element 'x' implicitly has an 'any' type.
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~
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!!! error TS7031: Binding element 'y' implicitly has an 'any' type.
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~
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!!! error TS7031: Binding element 'z' implicitly has an 'any' type.
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let {x1 = 10, y1 = 10, z1 = 10} = { x1: 1, y1: 2, z1: 3 }; // no error
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let {x2 = undefined, y2 = undefined, z2 = undefined} = { x2: 1, y2: 2, z2: 3 }; // no error
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~~
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!!! error TS7031: Binding element 'x2' implicitly has an 'any' type.
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~~
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!!! error TS7031: Binding element 'y2' implicitly has an 'any' type.
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~~
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!!! error TS7031: Binding element 'z2' implicitly has an 'any' type.
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let {x3 = <any>undefined, y3 = <any>null, z3 = <any>undefined} = { x3: 1, y3: 2, z3: 3 }; // no error
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let {x4} = { x4: <any>undefined }, {y4} = { y4: <any>null }; // no error
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~~
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!!! error TS7031: Binding element 'x4' implicitly has an 'any' type.
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~~
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!!! error TS7031: Binding element 'y4' implicitly has an 'any' type.
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@@ -0,0 +1,78 @@
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=== tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts ===
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let [a, b, c] = [1, 2, 3]; // no error
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>a : Symbol(a, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 0, 5))
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>b : Symbol(b, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 0, 7))
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>c : Symbol(c, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 0, 10))
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let [a1 = 10, b1 = 10, c1 = 10] = [1, 2, 3]; // no error
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>a1 : Symbol(a1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 1, 5))
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>b1 : Symbol(b1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 1, 13))
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>c1 : Symbol(c1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 1, 22))
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let [a2 = undefined, b2 = undefined, c2 = undefined] = [1, 2, 3]; // no error
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>a2 : Symbol(a2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 2, 5))
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>undefined : Symbol(undefined)
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>b2 : Symbol(b2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 2, 20))
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>undefined : Symbol(undefined)
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>c2 : Symbol(c2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 2, 36))
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>undefined : Symbol(undefined)
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let [a3 = <any>undefined, b3 = <any>null, c3 = <any>undefined] = [1, 2, 3]; // no error
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>a3 : Symbol(a3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 3, 5))
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>undefined : Symbol(undefined)
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>b3 : Symbol(b3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 3, 25))
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>c3 : Symbol(c3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 3, 41))
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>undefined : Symbol(undefined)
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let [a4] = [<any>undefined], [b4] = [<any>null], c4 = <any>undefined, d4 = <any>null; // no error
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>a4 : Symbol(a4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 4, 5))
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>undefined : Symbol(undefined)
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>b4 : Symbol(b4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 4, 30))
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>c4 : Symbol(c4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 4, 48))
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>undefined : Symbol(undefined)
|
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>d4 : Symbol(d4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 4, 69))
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|
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let {x, y, z} = { x: 1, y: 2, z: 3 }; // no error
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>x : Symbol(x, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 6, 5))
|
||||
>y : Symbol(y, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 6, 7))
|
||||
>z : Symbol(z, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 6, 10))
|
||||
>x : Symbol(x, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 6, 17))
|
||||
>y : Symbol(y, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 6, 23))
|
||||
>z : Symbol(z, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 6, 29))
|
||||
|
||||
let {x1 = 10, y1 = 10, z1 = 10} = { x1: 1, y1: 2, z1: 3 }; // no error
|
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>x1 : Symbol(x1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 7, 5))
|
||||
>y1 : Symbol(y1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 7, 13))
|
||||
>z1 : Symbol(z1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 7, 22))
|
||||
>x1 : Symbol(x1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 7, 35))
|
||||
>y1 : Symbol(y1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 7, 42))
|
||||
>z1 : Symbol(z1, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 7, 49))
|
||||
|
||||
let {x2 = undefined, y2 = undefined, z2 = undefined} = { x2: 1, y2: 2, z2: 3 }; // no error
|
||||
>x2 : Symbol(x2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 8, 5))
|
||||
>undefined : Symbol(undefined)
|
||||
>y2 : Symbol(y2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 8, 20))
|
||||
>undefined : Symbol(undefined)
|
||||
>z2 : Symbol(z2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 8, 36))
|
||||
>undefined : Symbol(undefined)
|
||||
>x2 : Symbol(x2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 8, 56))
|
||||
>y2 : Symbol(y2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 8, 63))
|
||||
>z2 : Symbol(z2, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 8, 70))
|
||||
|
||||
let {x3 = <any>undefined, y3 = <any>null, z3 = <any>undefined} = { x3: 1, y3: 2, z3: 3 }; // no error
|
||||
>x3 : Symbol(x3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 9, 5))
|
||||
>undefined : Symbol(undefined)
|
||||
>y3 : Symbol(y3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 9, 25))
|
||||
>z3 : Symbol(z3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 9, 41))
|
||||
>undefined : Symbol(undefined)
|
||||
>x3 : Symbol(x3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 9, 66))
|
||||
>y3 : Symbol(y3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 9, 73))
|
||||
>z3 : Symbol(z3, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 9, 80))
|
||||
|
||||
let {x4} = { x4: <any>undefined }, {y4} = { y4: <any>null }; // no error
|
||||
>x4 : Symbol(x4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 10, 5))
|
||||
>x4 : Symbol(x4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 10, 12))
|
||||
>undefined : Symbol(undefined)
|
||||
>y4 : Symbol(y4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 10, 36))
|
||||
>y4 : Symbol(y4, Decl(noImplicitAnyDestructuringVarDeclaration2.ts, 10, 43))
|
||||
|
||||
@@ -0,0 +1,137 @@
|
||||
=== tests/cases/compiler/noImplicitAnyDestructuringVarDeclaration2.ts ===
|
||||
let [a, b, c] = [1, 2, 3]; // no error
|
||||
>a : number
|
||||
>b : number
|
||||
>c : number
|
||||
>[1, 2, 3] : [number, number, number]
|
||||
>1 : number
|
||||
>2 : number
|
||||
>3 : number
|
||||
|
||||
let [a1 = 10, b1 = 10, c1 = 10] = [1, 2, 3]; // no error
|
||||
>a1 : number
|
||||
>10 : number
|
||||
>b1 : number
|
||||
>10 : number
|
||||
>c1 : number
|
||||
>10 : number
|
||||
>[1, 2, 3] : [number, number, number]
|
||||
>1 : number
|
||||
>2 : number
|
||||
>3 : number
|
||||
|
||||
let [a2 = undefined, b2 = undefined, c2 = undefined] = [1, 2, 3]; // no error
|
||||
>a2 : number
|
||||
>undefined : undefined
|
||||
>b2 : number
|
||||
>undefined : undefined
|
||||
>c2 : number
|
||||
>undefined : undefined
|
||||
>[1, 2, 3] : [number, number, number]
|
||||
>1 : number
|
||||
>2 : number
|
||||
>3 : number
|
||||
|
||||
let [a3 = <any>undefined, b3 = <any>null, c3 = <any>undefined] = [1, 2, 3]; // no error
|
||||
>a3 : number
|
||||
><any>undefined : any
|
||||
>undefined : undefined
|
||||
>b3 : number
|
||||
><any>null : any
|
||||
>null : null
|
||||
>c3 : number
|
||||
><any>undefined : any
|
||||
>undefined : undefined
|
||||
>[1, 2, 3] : [number, number, number]
|
||||
>1 : number
|
||||
>2 : number
|
||||
>3 : number
|
||||
|
||||
let [a4] = [<any>undefined], [b4] = [<any>null], c4 = <any>undefined, d4 = <any>null; // no error
|
||||
>a4 : any
|
||||
>[<any>undefined] : [any]
|
||||
><any>undefined : any
|
||||
>undefined : undefined
|
||||
>b4 : any
|
||||
>[<any>null] : [any]
|
||||
><any>null : any
|
||||
>null : null
|
||||
>c4 : any
|
||||
><any>undefined : any
|
||||
>undefined : undefined
|
||||
>d4 : any
|
||||
><any>null : any
|
||||
>null : null
|
||||
|
||||
let {x, y, z} = { x: 1, y: 2, z: 3 }; // no error
|
||||
>x : number
|
||||
>y : number
|
||||
>z : number
|
||||
>{ x: 1, y: 2, z: 3 } : { x: number; y: number; z: number; }
|
||||
>x : number
|
||||
>1 : number
|
||||
>y : number
|
||||
>2 : number
|
||||
>z : number
|
||||
>3 : number
|
||||
|
||||
let {x1 = 10, y1 = 10, z1 = 10} = { x1: 1, y1: 2, z1: 3 }; // no error
|
||||
>x1 : number
|
||||
>10 : number
|
||||
>y1 : number
|
||||
>10 : number
|
||||
>z1 : number
|
||||
>10 : number
|
||||
>{ x1: 1, y1: 2, z1: 3 } : { x1?: number; y1?: number; z1?: number; }
|
||||
>x1 : number
|
||||
>1 : number
|
||||
>y1 : number
|
||||
>2 : number
|
||||
>z1 : number
|
||||
>3 : number
|
||||
|
||||
let {x2 = undefined, y2 = undefined, z2 = undefined} = { x2: 1, y2: 2, z2: 3 }; // no error
|
||||
>x2 : number
|
||||
>undefined : undefined
|
||||
>y2 : number
|
||||
>undefined : undefined
|
||||
>z2 : number
|
||||
>undefined : undefined
|
||||
>{ x2: 1, y2: 2, z2: 3 } : { x2?: number; y2?: number; z2?: number; }
|
||||
>x2 : number
|
||||
>1 : number
|
||||
>y2 : number
|
||||
>2 : number
|
||||
>z2 : number
|
||||
>3 : number
|
||||
|
||||
let {x3 = <any>undefined, y3 = <any>null, z3 = <any>undefined} = { x3: 1, y3: 2, z3: 3 }; // no error
|
||||
>x3 : number
|
||||
><any>undefined : any
|
||||
>undefined : undefined
|
||||
>y3 : number
|
||||
><any>null : any
|
||||
>null : null
|
||||
>z3 : number
|
||||
><any>undefined : any
|
||||
>undefined : undefined
|
||||
>{ x3: 1, y3: 2, z3: 3 } : { x3?: number; y3?: number; z3?: number; }
|
||||
>x3 : number
|
||||
>1 : number
|
||||
>y3 : number
|
||||
>2 : number
|
||||
>z3 : number
|
||||
>3 : number
|
||||
|
||||
let {x4} = { x4: <any>undefined }, {y4} = { y4: <any>null }; // no error
|
||||
>x4 : any
|
||||
>{ x4: <any>undefined } : { x4: any; }
|
||||
>x4 : any
|
||||
><any>undefined : any
|
||||
>undefined : undefined
|
||||
>y4 : any
|
||||
>{ y4: <any>null } : { y4: any; }
|
||||
>y4 : any
|
||||
><any>null : any
|
||||
>null : null
|
||||
|
||||
Reference in New Issue
Block a user