240 lines
No EOL
12 KiB
Text
240 lines
No EOL
12 KiB
Text
tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(15,12): error TS2322: Type 'string' is not assignable to type 'boolean'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(22,33): error TS2304: Cannot find name 'x'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(26,10): error TS2391: Function implementation is missing or not immediately following the declaration.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(27,5): error TS1131: Property or signature expected.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(28,1): error TS1128: Declaration or statement expected.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(30,38): error TS1225: Cannot find parameter 'x'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(34,51): error TS2322: Type 'B' is not assignable to type 'A'.
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Property 'propA' is missing in type 'B'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(38,56): error TS2322: Type 'number' is not assignable to type 'string'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(42,56): error TS2322: Type 'T[]' is not assignable to type 'string'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(56,7): error TS2339: Property 'propB' does not exist on type 'A'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(61,7): error TS2339: Property 'propB' does not exist on type 'A'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(66,7): error TS2339: Property 'propB' does not exist on type 'A'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(71,46): error TS2345: Argument of type '(p1: any) => boolean' is not assignable to parameter of type '(p1: any) => boolean'.
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Type predicate 'p1 is C' is not assignable to 'p1 is B'.
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Type 'C' is not assignable to type 'B'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(75,1): error TS2322: Type '(p1: any, p2: any) => boolean' is not assignable to type '(p1: any, p2: any) => boolean'.
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Signature '(p1: any, p2: any): boolean' must have a type predicate.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(81,1): error TS2322: Type '(p1: any, p2: any) => boolean' is not assignable to type '(p1: any, p2: any) => boolean'.
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Type predicate 'p2 is A' is not assignable to 'p1 is A'.
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Parameter 'p2' is not in the same position as parameter 'p1'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(87,1): error TS2322: Type '(p1: any, p2: any, p3: any) => boolean' is not assignable to type '(p1: any, p2: any) => boolean'.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(92,9): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(93,16): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(94,20): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(100,25): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(101,16): error TS2409: Return type of constructor signature must be assignable to the instance type of the class
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(103,20): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(106,20): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(107,16): error TS2408: Setters cannot return a value.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(112,18): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(116,22): error TS1228: A type predicate is only allowed in return type position for functions and methods.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(120,20): error TS1229: A type predicate cannot reference a rest parameter.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(125,34): error TS1230: A type predicate cannot reference element 'p1' in a binding pattern.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(129,34): error TS1230: A type predicate cannot reference element 'p1' in a binding pattern.
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tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts(133,39): error TS1230: A type predicate cannot reference element 'p1' in a binding pattern.
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==== tests/cases/conformance/expressions/typeGuards/typeGuardFunctionErrors.ts (30 errors) ====
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class A {
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propA: number;
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}
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class B {
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propB: number;
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}
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class C extends A {
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propC: number;
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}
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function hasANonBooleanReturnStatement(x): x is A {
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return '';
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~~
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!!! error TS2322: Type 'string' is not assignable to type 'boolean'.
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}
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function hasTypeGuardTypeInsideTypeGuardType(x): x is x is A {
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return true;
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}
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function hasMissingIsKeyword(): x {
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~
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!!! error TS2304: Cannot find name 'x'.
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return true;
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}
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function hasMissingTypeInTypeGuardType(x): x is {
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2391: Function implementation is missing or not immediately following the declaration.
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return true;
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~~~~~~
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!!! error TS1131: Property or signature expected.
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}
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~
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!!! error TS1128: Declaration or statement expected.
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function hasNonMatchingParameter(y): x is A {
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~
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!!! error TS1225: Cannot find parameter 'x'.
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return true;
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}
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function hasNonMatchingParameterType1(x: A): x is B {
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~
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!!! error TS2322: Type 'B' is not assignable to type 'A'.
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!!! error TS2322: Property 'propA' is missing in type 'B'.
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return true;
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}
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function hasNonMatchingParameterType2(x: string): x is number {
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~~~~~~
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!!! error TS2322: Type 'number' is not assignable to type 'string'.
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return true;
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}
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function hasNonMathcingGenericType<T>(a: string): a is T[] {
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~~~
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!!! error TS2322: Type 'T[]' is not assignable to type 'string'.
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return true;
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}
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let a: A;
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let b: B;
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declare function isB(p1): p1 is B;
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declare function isC(p1): p1 is C;
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declare function funA(p1: any, p2: any): p1 is B;
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declare function hasNoTypeGuard(x);
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// Passed argument is not the same as the one being guarded.
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if (isB(b)) {
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a.propB;
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~~~~~
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!!! error TS2339: Property 'propB' does not exist on type 'A'.
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}
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// Parameter index and argument index for the type guard target is not matching.
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if (funA(0, a)) {
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a.propB; // Error
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~~~~~
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!!! error TS2339: Property 'propB' does not exist on type 'A'.
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}
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// No type guard in if statement
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if (hasNoTypeGuard(a)) {
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a.propB;
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~~~~~
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!!! error TS2339: Property 'propB' does not exist on type 'A'.
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}
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// Type predicate type is not assignable
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declare function acceptingDifferentSignatureTypeGuardFunction(p1: (p1) => p1 is B);
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acceptingDifferentSignatureTypeGuardFunction(isC);
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~~~
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!!! error TS2345: Argument of type '(p1: any) => boolean' is not assignable to parameter of type '(p1: any) => boolean'.
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!!! error TS2345: Type predicate 'p1 is C' is not assignable to 'p1 is B'.
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!!! error TS2345: Type 'C' is not assignable to type 'B'.
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// Boolean not assignable to type guard
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var assign1: (p1, p2) => p1 is A;
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assign1 = function(p1, p2): boolean {
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~~~~~~~
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!!! error TS2322: Type '(p1: any, p2: any) => boolean' is not assignable to type '(p1: any, p2: any) => boolean'.
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!!! error TS2322: Signature '(p1: any, p2: any): boolean' must have a type predicate.
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return true;
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};
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// Must have matching parameter index
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var assign2: (p1, p2) => p1 is A;
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assign2 = function(p1, p2): p2 is A {
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~~~~~~~
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!!! error TS2322: Type '(p1: any, p2: any) => boolean' is not assignable to type '(p1: any, p2: any) => boolean'.
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!!! error TS2322: Type predicate 'p2 is A' is not assignable to 'p1 is A'.
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!!! error TS2322: Parameter 'p2' is not in the same position as parameter 'p1'.
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return true;
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};
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// No matching signature
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var assign3: (p1, p2) => p1 is A;
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assign3 = function(p1, p2, p3): p1 is A {
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~~~~~~~
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!!! error TS2322: Type '(p1: any, p2: any, p3: any) => boolean' is not assignable to type '(p1: any, p2: any) => boolean'.
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return true;
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};
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// Type predicates in non-return type positions
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var b1: b is A;
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~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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function b2(a: b is A) {};
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~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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function b3(): A | b is A {
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~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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return true;
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};
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// Non-compatiable type predicate positions for signature declarations
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class D {
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constructor(p1: A): p1 is C {
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~~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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return true;
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~~~~
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!!! error TS2409: Return type of constructor signature must be assignable to the instance type of the class
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}
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get m1(p1: A): p1 is C {
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~~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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return true;
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}
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set m2(p1: A): p1 is C {
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~~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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return true;
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~~~~
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!!! error TS2408: Setters cannot return a value.
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}
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}
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interface I1 {
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new (p1: A): p1 is C;
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~~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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}
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interface I2 {
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[index: number]: p1 is C;
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~~~~~~~
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!!! error TS1228: A type predicate is only allowed in return type position for functions and methods.
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}
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// Reference to rest parameter
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function b4(...a): a is A {
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~
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!!! error TS1229: A type predicate cannot reference a rest parameter.
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return true;
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}
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// Reference to binding pattern
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function b5({a, b, p1}, p2, p3): p1 is A {
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~~
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!!! error TS1230: A type predicate cannot reference element 'p1' in a binding pattern.
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return true;
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}
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function b6([a, b, p1], p2, p3): p1 is A {
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~~
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!!! error TS1230: A type predicate cannot reference element 'p1' in a binding pattern.
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return true;
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}
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function b7({a, b, c: {p1}}, p2, p3): p1 is A {
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~~
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!!! error TS1230: A type predicate cannot reference element 'p1' in a binding pattern.
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return true;
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} |