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uncalledFunctionChecksInConditional.types
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/
uncalledFunctionChecksInConditional.types
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=== tests/cases/compiler/uncalledFunctionChecksInConditional.ts ===
declare function isFoo(): boolean;
>isFoo : () => boolean
declare function isBar(): boolean;
>isBar : () => boolean
declare const isUndefinedFoo: (() => boolean) | undefined;
>isUndefinedFoo : (() => boolean) | undefined
if (isFoo) {
>isFoo : () => boolean
// error on isFoo
}
if (isFoo || isBar) {
>isFoo || isBar : () => boolean
>isFoo : () => boolean
>isBar : () => boolean
// error on isFoo, isBar
}
if (isFoo || isFoo()) {
>isFoo || isFoo() : () => boolean
>isFoo : () => boolean
>isFoo() : boolean
>isFoo : () => boolean
// error on isFoo
}
if (isUndefinedFoo || isFoo()) {
>isUndefinedFoo || isFoo() : boolean | (() => boolean)
>isUndefinedFoo : (() => boolean) | undefined
>isFoo() : boolean
>isFoo : () => boolean
// no error
}
if (isFoo && isFoo()) {
>isFoo && isFoo() : boolean
>isFoo : () => boolean
>isFoo() : boolean
>isFoo : () => boolean
// no error
}
declare const x: boolean;
>x : boolean
declare const ux: boolean | undefined;
>ux : boolean | undefined
declare const y: boolean;
>y : boolean
declare const uy: boolean | undefined;
>uy : boolean | undefined
declare function z(): boolean;
>z : () => boolean
declare const uz: (() => boolean) | undefined;
>uz : (() => boolean) | undefined
if (x || isFoo) {
>x || isFoo : true | (() => boolean)
>x : boolean
>isFoo : () => boolean
// error on isFoo
}
if (isFoo || x) {
>isFoo || x : () => boolean
>isFoo : () => boolean
>x : boolean
// error on isFoo
}
if (x || y || z() || isFoo) {
>x || y || z() || isFoo : true | (() => boolean)
>x || y || z() : boolean
>x || y : boolean
>x : boolean
>y : boolean
>z() : boolean
>z : () => boolean
>isFoo : () => boolean
// error on isFoo
}
if (x || uy || z || isUndefinedFoo) {
>x || uy || z || isUndefinedFoo : true | (() => boolean)
>x || uy || z : true | (() => boolean)
>x || uy : boolean | undefined
>x : boolean
>uy : boolean | undefined
>z : () => boolean
>isUndefinedFoo : (() => boolean) | undefined
// error on z
}
if (ux || y || uz || isFoo) {
>ux || y || uz || isFoo : true | (() => boolean)
>ux || y || uz : true | (() => boolean) | undefined
>ux || y : boolean
>ux : boolean | undefined
>y : boolean
>uz : (() => boolean) | undefined
>isFoo : () => boolean
// error on isFoo
}
if (x && z) {
>x && z : false | (() => boolean)
>x : boolean
>z : () => boolean
// no error
z();
>z() : boolean
>z : () => boolean
}