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tests/cases/compiler/implicitConstParameters.ts(39,27): error TS2532: Object is possibly 'undefined'.
tests/cases/compiler/implicitConstParameters.ts(45,27): error TS2532: Object is possibly 'undefined'.
==== tests/cases/compiler/implicitConstParameters.ts (2 errors) ====
function doSomething(cb: () => void) {
cb();
}
function fn(x: number | string) {
if (typeof x === 'number') {
doSomething(() => x.toFixed());
}
}
function f1(x: string | undefined) {
if (!x) {
return;
}
doSomething(() => x.length);
}
function f2(x: string | undefined) {
if (x) {
doSomething(() => {
doSomething(() => x.length);
});
}
}
function f3(x: string | undefined) {
inner();
function inner() {
if (x) {
doSomething(() => x.length);
}
}
}
function f4(x: string | undefined) {
x = "abc"; // causes x to be considered non-const
if (x) {
doSomething(() => x.length);
~
!!! error TS2532: Object is possibly 'undefined'.
}
}
function f5(x: string | undefined) {
if (x) {
doSomething(() => x.length);
~
!!! error TS2532: Object is possibly 'undefined'.
}
x = "abc"; // causes x to be considered non-const
}
function f6(x: string | undefined) {
const y = x || "";
if (x) {
doSomething(() => y.length);
}
}
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