76 lines
1.3 KiB
TypeScript
76 lines
1.3 KiB
TypeScript
// @strictNullChecks: true
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// @target: ES2017
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declare function getStringOrNumber(): string | number;
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function f1() {
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let x = getStringOrNumber();
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if (typeof x === "string") {
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let n = function() {
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return x.length;
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}();
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}
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}
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function f2() {
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let x = getStringOrNumber();
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if (typeof x === "string") {
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let n = (function() {
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return x.length;
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})();
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}
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}
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function f3() {
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let x = getStringOrNumber();
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let y: number;
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if (typeof x === "string") {
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let n = (z => x.length + y + z)(y = 1);
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}
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}
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// Repros from #8381
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let maybeNumber: number | undefined;
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(function () {
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maybeNumber = 1;
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})();
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maybeNumber++;
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if (maybeNumber !== undefined) {
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maybeNumber++;
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}
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let test: string | undefined;
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if (!test) {
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throw new Error('Test is not defined');
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}
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(() => {
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test.slice(1); // No error
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})();
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// Repro from #23565
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function f4() {
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let v: number;
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(function() {
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v = 1;
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})();
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v;
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}
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function f5() {
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let v: number;
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(function*() {
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yield 1;
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v = 1;
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})();
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v; // still undefined
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}
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function f6() {
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let v: number;
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(async function() {
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v = await 1;
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})();
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v; // still undefined
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} |