| "use strict"; |
| Object.defineProperty(exports, "__esModule", { value: true }); |
| exports.awaitEachYieldedPromise = exports.maybeAsync = exports.maybeAsyncFn = void 0; |
| function* awaitYield(value) { |
| return (yield value); |
| } |
| function awaitYieldOf(generator) { |
| return awaitYield(awaitEachYieldedPromise(generator)); |
| } |
| const AwaitYield = awaitYield; |
| AwaitYield.of = awaitYieldOf; |
| /** |
| * Create a function that may or may not be async, using a generator |
| * |
| * Within the generator, call `yield* awaited(maybePromise)` to await a value |
| * that may or may not be a promise. |
| * |
| * If the inner function never yields a promise, it will return synchronously. |
| */ |
| function maybeAsyncFn(that, fn) { |
| return (...args) => { |
| const generator = fn.call(that, AwaitYield, ...args); |
| return awaitEachYieldedPromise(generator); |
| }; |
| } |
| exports.maybeAsyncFn = maybeAsyncFn; |
| class Example { |
| constructor() { |
| this.maybeAsyncMethod = maybeAsyncFn(this, function* (awaited, a) { |
| yield* awaited(new Promise((resolve) => setTimeout(resolve, a))); |
| return 5; |
| }); |
| } |
| } |
| function maybeAsync(that, startGenerator) { |
| const generator = startGenerator.call(that, AwaitYield); |
| return awaitEachYieldedPromise(generator); |
| } |
| exports.maybeAsync = maybeAsync; |
| function awaitEachYieldedPromise(gen) { |
| function handleNextStep(step) { |
| if (step.done) { |
| return step.value; |
| } |
| if (step.value instanceof Promise) { |
| return step.value.then((value) => handleNextStep(gen.next(value)), (error) => handleNextStep(gen.throw(error))); |
| } |
| return handleNextStep(gen.next(step.value)); |
| } |
| return handleNextStep(gen.next()); |
| } |
| exports.awaitEachYieldedPromise = awaitEachYieldedPromise; |
| //# sourceMappingURL=asyncify-helpers.js.map |
