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Add .asyncGenerator and .asyncGeneratorFunction detection (#100)

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Forresst 2020-01-29 18:35:58 +01:00 • committed by GitHub
parent d28c86ee27
commit 446a7a081e
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3 changed files with 89 additions and 2 deletions
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10
source/index.ts
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@ -14,7 +14,9 @@ export const enum TypeName {
symbol = 'symbol',
Function = 'Function',
Generator = 'Generator',
AsyncGenerator = 'AsyncGenerator',
GeneratorFunction = 'GeneratorFunction',
AsyncGeneratorFunction = 'AsyncGeneratorFunction',
AsyncFunction = 'AsyncFunction',
Observable = 'Observable',
Array = 'Array',
@ -141,6 +143,8 @@ is.asyncIterable = <T = unknown>(value: unknown): value is AsyncIterableIterator
is.generator = (value: unknown): value is Generator => is.iterable(value) && is.function_(value.next) && is.function_(value.throw);
is.asyncGenerator = (value: unknown): value is AsyncGenerator => is.asyncIterable(value) && is.function_(value.next) && is.function_(value.throw);
is.nativePromise = <T = unknown>(value: unknown): value is Promise<T> =>
isObjectOfType<Promise<T>>(TypeName.Promise)(value);
@ -153,6 +157,8 @@ is.promise = <T = unknown>(value: unknown): value is Promise<T> => is.nativeProm
is.generatorFunction = isObjectOfType<GeneratorFunction>(TypeName.GeneratorFunction);
is.asyncGeneratorFunction = (value: unknown): value is ((...args: any[]) => Promise<unknown>) => getObjectType(value) === TypeName.AsyncGeneratorFunction;
is.asyncFunction = <T = unknown>(value: unknown): value is ((...args: any[]) => Promise<T>) => getObjectType(value) === TypeName.AsyncFunction;
// eslint-disable-next-line no-prototype-builtins, @typescript-eslint/ban-types
@ -454,9 +460,11 @@ interface Assert {
iterable: <T = unknown>(value: unknown) => asserts value is Iterable<T>;
asyncIterable: <T = unknown>(value: unknown) => asserts value is AsyncIterable<T>;
generator: (value: unknown) => asserts value is Generator;
asyncGenerator: (value: unknown) => asserts value is AsyncGenerator;
nativePromise: <T = unknown>(value: unknown) => asserts value is Promise<T>;
promise: <T = unknown>(value: unknown) => asserts value is Promise<T>;
generatorFunction: (value: unknown) => asserts value is GeneratorFunction;
asyncGeneratorFunction: (value: unknown) => asserts value is AsyncGeneratorFunction;
// eslint-disable-next-line @typescript-eslint/ban-types
asyncFunction: (value: unknown) => asserts value is Function;
// eslint-disable-next-line @typescript-eslint/ban-types
@ -542,9 +550,11 @@ export const assert: Assert = {
iterable: <T = unknown>(value: unknown): asserts value is Iterable<T> => assertType(is.iterable(value), AssertionTypeDescription.iterable, value),
asyncIterable: <T = unknown>(value: unknown): asserts value is AsyncIterable<T> => assertType(is.asyncIterable(value), AssertionTypeDescription.asyncIterable, value),
generator: (value: unknown): asserts value is Generator => assertType(is.generator(value), TypeName.Generator, value),
asyncGenerator: (value: unknown): asserts value is AsyncGenerator => assertType(is.asyncGenerator(value), TypeName.AsyncGenerator, value),
nativePromise: <T = unknown>(value: unknown): asserts value is Promise<T> => assertType(is.nativePromise(value), AssertionTypeDescription.nativePromise, value),
promise: <T = unknown>(value: unknown): asserts value is Promise<T> => assertType(is.promise(value), TypeName.Promise, value),
generatorFunction: (value: unknown): asserts value is GeneratorFunction => assertType(is.generatorFunction(value), TypeName.GeneratorFunction, value),
asyncGeneratorFunction: (value: unknown): asserts value is AsyncGeneratorFunction => assertType(is.asyncGeneratorFunction(value), TypeName.AsyncGeneratorFunction, value),
// eslint-disable-next-line @typescript-eslint/ban-types
asyncFunction: (value: unknown): asserts value is Function => assertType(is.asyncFunction(value), TypeName.AsyncFunction, value),
// eslint-disable-next-line @typescript-eslint/ban-types