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add tests to check errors for use of 'await' in non-async function
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‎tests/baselines/reference/awaitInNonAsyncFunction.errors.txt

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tests/cases/compiler/awaitInNonAsyncFunction.ts(4,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(5,10): error TS1308: 'await' expression is only allowed within an async function.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(9,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(10,10): error TS1308: 'await' expression is only allowed within an async function.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(14,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(15,3): error TS1308: 'await' expression is only allowed within an async function.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(19,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(20,10): error TS1308: 'await' expression is only allowed within an async function.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(24,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(25,9): error TS1308: 'await' expression is only allowed within an async function.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(30,9): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(31,5): error TS1308: 'await' expression is only allowed within an async function.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(34,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(35,5): error TS1308: 'await' expression is only allowed within an async function.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(39,5): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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tests/cases/compiler/awaitInNonAsyncFunction.ts(40,1): error TS1308: 'await' expression is only allowed within an async function.
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==== tests/cases/compiler/awaitInNonAsyncFunction.ts (16 errors) ====
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// https://github.com/Microsoft/TypeScript/issues/26586
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function normalFunc(p: Promise<number>) {
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:3:10: Did you mean to mark this function as 'async'?
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return await p;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:3:10: Did you mean to mark this function as 'async'?
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}
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export function exportedFunc(p: Promise<number>) {
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:8:17: Did you mean to mark this function as 'async'?
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return await p;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:8:17: Did you mean to mark this function as 'async'?
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}
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const functionExpression = function(p: Promise<number>) {
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:13:28: Did you mean to mark this function as 'async'?
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await p;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:13:28: Did you mean to mark this function as 'async'?
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}
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const arrowFunc = (p: Promise<number>) => {
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:18:19: Did you mean to mark this function as 'async'?
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return await p;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:18:19: Did you mean to mark this function as 'async'?
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};
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function* generatorFunc(p: Promise<number>) {
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:23:11: Did you mean to mark this function as 'async'?
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yield await p;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:23:11: Did you mean to mark this function as 'async'?
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}
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class clazz {
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constructor(p: Promise<number>) {
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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await p;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.
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}
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method(p: Promise<number>) {
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:33:3: Did you mean to mark this function as 'async'?
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await p;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.
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!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:33:3: Did you mean to mark this function as 'async'?
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}
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}
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for await (const _ of []);
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~~~~~
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!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
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await null;
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~~~~~
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!!! error TS1308: 'await' expression is only allowed within an async function.

‎tests/baselines/reference/awaitInNonAsyncFunction.js

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//// [awaitInNonAsyncFunction.ts]
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// https://github.com/Microsoft/TypeScript/issues/26586
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function normalFunc(p: Promise<number>) {
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for await (const _ of []);
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return await p;
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}
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export function exportedFunc(p: Promise<number>) {
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for await (const _ of []);
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return await p;
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}
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const functionExpression = function(p: Promise<number>) {
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for await (const _ of []);
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await p;
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}
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const arrowFunc = (p: Promise<number>) => {
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for await (const _ of []);
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return await p;
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};
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function* generatorFunc(p: Promise<number>) {
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for await (const _ of []);
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yield await p;
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}
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class clazz {
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constructor(p: Promise<number>) {
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for await (const _ of []);
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await p;
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}
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method(p: Promise<number>) {
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for await (const _ of []);
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await p;
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}
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}
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for await (const _ of []);
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await null;
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//// [awaitInNonAsyncFunction.js]
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// https://github.com/Microsoft/TypeScript/issues/26586
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function normalFunc(p) {
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for await (const _ of [])
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;
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return await p;
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}
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export function exportedFunc(p) {
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for await (const _ of [])
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;
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return await p;
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}
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const functionExpression = function (p) {
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for await (const _ of [])
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;
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await p;
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};
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const arrowFunc = (p) => {
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for await (const _ of [])
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;
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return await p;
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};
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function* generatorFunc(p) {
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for await (const _ of [])
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;
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yield await p;
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}
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class clazz {
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constructor(p) {
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for await (const _ of [])
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;
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await p;
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}
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method(p) {
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for await (const _ of [])
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;
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await p;
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}
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}
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for await (const _ of [])
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;
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await null;

‎tests/baselines/reference/awaitInNonAsyncFunction.symbols

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=== tests/cases/compiler/awaitInNonAsyncFunction.ts ===
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// https://github.com/Microsoft/TypeScript/issues/26586
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function normalFunc(p: Promise<number>) {
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>normalFunc : Symbol(normalFunc, Decl(awaitInNonAsyncFunction.ts, 0, 0))
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 2, 20))
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>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 3, 18))
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return await p;
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 2, 20))
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}
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export function exportedFunc(p: Promise<number>) {
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>exportedFunc : Symbol(exportedFunc, Decl(awaitInNonAsyncFunction.ts, 5, 1))
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 7, 29))
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>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 8, 18))
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return await p;
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 7, 29))
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}
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const functionExpression = function(p: Promise<number>) {
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>functionExpression : Symbol(functionExpression, Decl(awaitInNonAsyncFunction.ts, 12, 5))
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 12, 36))
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>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 13, 18))
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await p;
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 12, 36))
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}
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const arrowFunc = (p: Promise<number>) => {
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>arrowFunc : Symbol(arrowFunc, Decl(awaitInNonAsyncFunction.ts, 17, 5))
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 17, 19))
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>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 18, 18))
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return await p;
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 17, 19))
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};
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function* generatorFunc(p: Promise<number>) {
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>generatorFunc : Symbol(generatorFunc, Decl(awaitInNonAsyncFunction.ts, 20, 2))
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 22, 24))
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>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 23, 18))
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yield await p;
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 22, 24))
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}
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class clazz {
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>clazz : Symbol(clazz, Decl(awaitInNonAsyncFunction.ts, 25, 1))
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constructor(p: Promise<number>) {
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 28, 14))
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>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 29, 20))
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await p;
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 28, 14))
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}
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method(p: Promise<number>) {
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>method : Symbol(clazz.method, Decl(awaitInNonAsyncFunction.ts, 31, 3))
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 32, 9))
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>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 33, 18))
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await p;
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>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 32, 9))
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}
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}
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for await (const _ of []);
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>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 38, 16))
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await null;

‎tests/baselines/reference/awaitInNonAsyncFunction.types

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=== tests/cases/compiler/awaitInNonAsyncFunction.ts ===
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// https://github.com/Microsoft/TypeScript/issues/26586
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function normalFunc(p: Promise<number>) {
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>normalFunc : (p: Promise<number>) => number
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>p : Promise<number>
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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return await p;
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>await p : number
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>p : Promise<number>
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}
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export function exportedFunc(p: Promise<number>) {
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>exportedFunc : (p: Promise<number>) => number
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>p : Promise<number>
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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return await p;
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>await p : number
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>p : Promise<number>
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}
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const functionExpression = function(p: Promise<number>) {
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>functionExpression : (p: Promise<number>) => void
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>function(p: Promise<number>) { for await (const _ of []); await p;} : (p: Promise<number>) => void
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>p : Promise<number>
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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await p;
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>await p : number
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>p : Promise<number>
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}
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const arrowFunc = (p: Promise<number>) => {
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>arrowFunc : (p: Promise<number>) => number
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>(p: Promise<number>) => { for await (const _ of []); return await p;} : (p: Promise<number>) => number
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>p : Promise<number>
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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return await p;
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>await p : number
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>p : Promise<number>
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};
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function* generatorFunc(p: Promise<number>) {
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>generatorFunc : (p: Promise<number>) => IterableIterator<number>
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>p : Promise<number>
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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yield await p;
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>yield await p : any
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>await p : number
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>p : Promise<number>
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}
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class clazz {
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>clazz : clazz
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constructor(p: Promise<number>) {
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>p : Promise<number>
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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await p;
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>await p : number
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>p : Promise<number>
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}
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method(p: Promise<number>) {
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>method : (p: Promise<number>) => void
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>p : Promise<number>
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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await p;
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>await p : number
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>p : Promise<number>
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}
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}
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for await (const _ of []);
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>_ : any
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>[] : undefined[]
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await null;
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>await null : null
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>null : null
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