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tests/cases/compiler/truthinessCallExpressionCoercion2.ts(11,5): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(14,10): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(41,18): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(44,9): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(48,11): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(65,46): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(76,5): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(79,10): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(99,5): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(109,9): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/truthinessCallExpressionCoercion2.ts(112,14): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
==== tests/cases/compiler/truthinessCallExpressionCoercion2.ts (11 errors) ====
declare class A {
static from(): string;
}
declare class B {
static from(): string;
}
function test(required1: () => boolean, required2: () => boolean, b: boolean, optional?: () => boolean) {
// error
required1 && console.log('required');
~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error
1 && required1 && console.log('required');
~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// ok
required1 && required1();
// ok
required1 && 1 && required1();
// ok
optional && console.log('optional');
// ok
1 && optional && console.log('optional');
// ok
!!required1 && console.log('not required');
// ok
required1() && console.log('required call');
// ok
required1 && required2 && required1() && required2();
// ok
[].forEach((f: () => void) => f && f.apply(parent, []));
// error
required1 && required2 && required1() && console.log('foo');
~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error
if (required1 && b) {
~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
}
// error
if (((required1 && b))) {
~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
}
// ok
if (required1 && b) {
required1();
}
// ok
if (((required1 && b))) {
required1();
}
}
function checksConsole() {
// error
typeof window !== 'undefined' && window.console &&
((window.console as any).firebug || (window.console.error && window.console.table));
~~~~~~~~~~~~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
}
function checksPropertyAccess() {
const x = {
foo: {
bar() { return true; }
}
}
// error
x.foo.bar && console.log('x.foo.bar');
~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error
1 && x.foo.bar && console.log('x.foo.bar');
~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// ok
x.foo.bar && x.foo.bar();
// ok
x.foo.bar && 1 && x.foo.bar();
// ok
const y = A.from && (A.from as Function) !== B.from ? true : false;
y;
const x1 = {
a: { b: { c: () => {} } }
}
const x2 = {
a: { b: { c: () => {} } }
}
// error
x1.a.b.c && x2.a.b.c();
~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
}
class Foo {
optional?: () => boolean;
required() {
return true;
}
test() {
// error
this.required && console.log('required');
~~~~~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error
1 && this.required && console.log('required');
~~~~~~~~~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// ok
this.required && this.required();
// ok
this.required && 1 && this.required();
// ok
1 && this.optional && console.log('optional');
}
}
|
