4 examples of 'await is only valid in async function' in JavaScript

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10function makeAwaitFunc(variant?: string): any {
11
12 // Return an await function tailored to the given options.
13 switch (variant) {
14 case 'in': return getExtraInfo(traverseInPlace);
15 case 'top': return (n: number) => getExtraInfo(traverseInPlace, n);
16 default: return getExtraInfo(traverseClone);
17 }
18}
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34return function asyncFunction() {
35 const args = Array.from(arguments);
36 return new Promise(function (resolve, reject) {
37 let gen;
38
39 function step(next) {
40 const value = next.value;
41 if (next.done) {
42 return resolve(value);
43 }
44 if (value instanceof Promise) {
45 return value.then(
46 result => step(gen.next(result)),
47 error => {
48 try {
49 step(gen.throw(error));
50 } catch (err) {
51 throw err;
52 }
53 }
54 ).catch((err) => {
55 warn("Unhandled error in async function.", err);
56 reject(err);
57 });
58 }
59 step(gen.next(value));
60 }
61
62 if (typeof func !== "function") {
63 reject(new TypeError("Expected a Function."));
64 }
65 // not a generator, wrap it.
66 if (func.constructor.name !== "GeneratorFunction") {
67 gen = (function*() {
68 return func.call(self, ...args);
69 }());
70 } else {
71 gen = func.call(self, ...args);
72 }
73 try {
74 step(gen.next());
75 } catch (err) {
76 warn("The generator threw immediately.", err);
77 reject(err);
78 }
79 });
80};
5function isAsyncAwait(value) {
6 if (value && typeof value === 'object') {
7 return value.asyncAwait &&
8 typeof value.asyncAwait.then === 'function';
9 }
10
11 return false;
12}
122AwaitExpression: function Function(path, state) {
123 requiresTranspilation = true;
124},

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