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=== tests/cases/conformance/controlFlow/controlFlowIIFE.ts ===
declare function getStringOrNumber(): string | number;
>getStringOrNumber : () => string | number
function f1() {
>f1 : () => void
let x = getStringOrNumber();
>x : string | number
>getStringOrNumber() : string | number
>getStringOrNumber : () => string | number
if (typeof x === "string") {
>typeof x === "string" : boolean
>typeof x : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>x : string | number
>"string" : "string"
let n = function() {
>n : number
>function() { return x.length; }() : number
>function() { return x.length; } : () => number
return x.length;
>x.length : number
>x : string
>length : number
}();
}
}
function f2() {
>f2 : () => void
let x = getStringOrNumber();
>x : string | number
>getStringOrNumber() : string | number
>getStringOrNumber : () => string | number
if (typeof x === "string") {
>typeof x === "string" : boolean
>typeof x : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>x : string | number
>"string" : "string"
let n = (function() {
>n : number
>(function() { return x.length; })() : number
>(function() { return x.length; }) : () => number
>function() { return x.length; } : () => number
return x.length;
>x.length : number
>x : string
>length : number
})();
}
}
function f3() {
>f3 : () => void
let x = getStringOrNumber();
>x : string | number
>getStringOrNumber() : string | number
>getStringOrNumber : () => string | number
let y: number;
>y : number
if (typeof x === "string") {
>typeof x === "string" : boolean
>typeof x : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>x : string | number
>"string" : "string"
let n = (z => x.length + y + z)(y = 1);
>n : number
>(z => x.length + y + z)(y = 1) : number
>(z => x.length + y + z) : (z: number) => number
>z => x.length + y + z : (z: number) => number
>z : number
>x.length + y + z : number
>x.length + y : number
>x.length : number
>x : string
>length : number
>y : number
>z : number
>y = 1 : 1
>y : number
>1 : 1
}
}
// Repros from #8381
let maybeNumber: number | undefined;
>maybeNumber : number | undefined
(function () {
>(function () { maybeNumber = 1;})() : void
>(function () { maybeNumber = 1;}) : () => void
>function () { maybeNumber = 1;} : () => void
maybeNumber = 1;
>maybeNumber = 1 : 1
>maybeNumber : number | undefined
>1 : 1
})();
maybeNumber++;
>maybeNumber++ : number
>maybeNumber : number
if (maybeNumber !== undefined) {
>maybeNumber !== undefined : boolean
>maybeNumber : number
>undefined : undefined
maybeNumber++;
>maybeNumber++ : number
>maybeNumber : number
}
let test: string | undefined;
>test : string | undefined
if (!test) {
>!test : boolean
>test : string | undefined
throw new Error('Test is not defined');
>new Error('Test is not defined') : Error
>Error : ErrorConstructor
>'Test is not defined' : "Test is not defined"
}
(() => {
>(() => { test.slice(1); // No error})() : void
>(() => { test.slice(1); // No error}) : () => void
>() => { test.slice(1); // No error} : () => void
test.slice(1); // No error
>test.slice(1) : string
>test.slice : (start?: number | undefined, end?: number | undefined) => string
>test : string
>slice : (start?: number | undefined, end?: number | undefined) => string
>1 : 1
})();
// Repro from #23565
function f4() {
>f4 : () => void
let v: number;
>v : number
(function() {
>(function() { v = 1; })() : void
>(function() { v = 1; }) : () => void
>function() { v = 1; } : () => void
v = 1;
>v = 1 : 1
>v : number
>1 : 1
})();
v;
>v : number
}
function f5() {
>f5 : () => void
let v: number;
>v : number
(function*() {
>(function*() { yield 1; v = 1; })() : IterableIterator<number>
>(function*() { yield 1; v = 1; }) : () => IterableIterator<number>
>function*() { yield 1; v = 1; } : () => IterableIterator<number>
yield 1;
>yield 1 : any
>1 : 1
v = 1;
>v = 1 : 1
>v : number
>1 : 1
})();
v; // still undefined
>v : number
}
function f6() {
>f6 : () => void
let v: number;
>v : number
(async function() {
>(async function() { v = await 1; })() : Promise<void>
>(async function() { v = await 1; }) : () => Promise<void>
>async function() { v = await 1; } : () => Promise<void>
v = await 1;
>v = await 1 : 1
>v : number
>await 1 : 1
>1 : 1
})();
v; // still undefined
>v : number
}
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