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tests/cases/compiler/uncalledFunctionChecksInConditional.ts(5,5): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(9,5): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(9,14): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(13,5): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(32,10): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(36,5): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(40,22): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(44,16): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
tests/cases/compiler/uncalledFunctionChecksInConditional.ts(48,22): error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
==== tests/cases/compiler/uncalledFunctionChecksInConditional.ts (9 errors) ====
declare function isFoo(): boolean;
declare function isBar(): boolean;
declare const isUndefinedFoo: (() => boolean) | undefined;
if (isFoo) {
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on isFoo
}
if (isFoo || isBar) {
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on isFoo, isBar
}
if (isFoo || isFoo()) {
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on isFoo
}
if (isUndefinedFoo || isFoo()) {
// no error
}
if (isFoo && isFoo()) {
// no error
}
declare const x: boolean;
declare const ux: boolean | undefined;
declare const y: boolean;
declare const uy: boolean | undefined;
declare function z(): boolean;
declare const uz: (() => boolean) | undefined;
if (x || isFoo) {
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on isFoo
}
if (isFoo || x) {
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on isFoo
}
if (x || y || z() || isFoo) {
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on isFoo
}
if (x || uy || z || isUndefinedFoo) {
~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on z
}
if (ux || y || uz || isFoo) {
~~~~~
!!! error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
// error on isFoo
}
if (x && z) {
// no error
z();
}
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