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Lukas Tetzlaff 2018-10-31 16:45:43 +01:00
parent f7a8ee269b
commit e90fec0f62
2 changed files with 19 additions and 19 deletions
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30
source/index.ts
View file

@ -11,7 +11,7 @@ export interface ArrayLike {
length: number; length: number;
} }
export interface Class<T = any> { export interface Class<T = unknown> {
new(...args: any[]): T; new(...args: any[]): T;
} }
@ -57,7 +57,7 @@ export const enum TypeName {
const toString = Object.prototype.toString; const toString = Object.prototype.toString;
const isOfType = <T>(type: string) => (value: unknown): value is T => typeof value === type; const isOfType = <T>(type: string) => (value: unknown): value is T => typeof value === type;
const isBuffer = (input: any): input is Buffer => !is.nullOrUndefined(input) && !is.nullOrUndefined(input.constructor) && is.function_(input.constructor.isBuffer) && input.constructor.isBuffer(input); const isBuffer = (input: unknown): input is Buffer => !is.nullOrUndefined(input) && !is.nullOrUndefined((input as Buffer).constructor) && is.function_((input as Buffer).constructor.isBuffer) && (input as Buffer).constructor.isBuffer(input);
const getObjectType = (value: unknown): TypeName | null => { const getObjectType = (value: unknown): TypeName | null => {
const objectName = toString.call(value).slice(8, -1) as string; const objectName = toString.call(value).slice(8, -1) as string;
@ -145,18 +145,18 @@ namespace is { // tslint:disable-line:no-namespace
export const nullOrUndefined = (value: unknown): value is null | undefined => null_(value) || undefined(value); export const nullOrUndefined = (value: unknown): value is null | undefined => null_(value) || undefined(value);
export const object = (value: unknown): value is object => !nullOrUndefined(value) && (function_(value) || isObject(value)); export const object = (value: unknown): value is object => !nullOrUndefined(value) && (function_(value) || isObject(value));
export const iterable = (value: any): value is IterableIterator<unknown> => !nullOrUndefined(value) && function_(value[Symbol.iterator]); export const iterable = (value: unknown): value is IterableIterator<unknown> => !nullOrUndefined(value) && function_((value as IterableIterator<unknown>)[Symbol.iterator]);
export const asyncIterable = (value: any): value is AsyncIterableIterator<unknown> => !nullOrUndefined(value) && function_(value[Symbol.asyncIterator]); export const asyncIterable = (value: unknown): value is AsyncIterableIterator<unknown> => !nullOrUndefined(value) && function_((value as AsyncIterableIterator<unknown>)[Symbol.asyncIterator]);
export const generator = (value: unknown): value is Generator => iterable(value) && function_(value.next) && function_(value.throw); export const generator = (value: unknown): value is Generator => iterable(value) && function_(value.next) && function_(value.throw);
export const nativePromise = (value: unknown): value is Promise<unknown> => export const nativePromise = (value: unknown): value is Promise<unknown> =>
isObjectOfType<Promise<unknown>>(TypeName.Promise)(value); isObjectOfType<Promise<unknown>>(TypeName.Promise)(value);
const hasPromiseAPI = (value: any): value is Promise<unknown> => const hasPromiseAPI = (value: unknown): value is Promise<unknown> =>
!null_(value) && !null_(value) &&
isObject(value) as unknown && isObject(value) as unknown &&
function_(value.then) && function_((value as Promise<unknown>).then) &&
function_(value.catch); function_((value as Promise<unknown>).catch);
export const promise = (value: unknown): value is Promise<unknown> => nativePromise(value) || hasPromiseAPI(value); export const promise = (value: unknown): value is Promise<unknown> => nativePromise(value) || hasPromiseAPI(value);
@ -192,7 +192,7 @@ namespace is { // tslint:disable-line:no-namespace
export const truthy = (value: unknown) => Boolean(value); export const truthy = (value: unknown) => Boolean(value);
export const falsy = (value: unknown) => !value; export const falsy = (value: unknown) => !value;
export const nan = (value: any) => Number.isNaN(value); export const nan = (value: unknown) => Number.isNaN(value as number);
const primitiveTypes = new Set([ const primitiveTypes = new Set([
'undefined', 'undefined',
@ -204,8 +204,8 @@ namespace is { // tslint:disable-line:no-namespace
export const primitive = (value: unknown): value is Primitive => null_(value) || primitiveTypes.has(typeof value); export const primitive = (value: unknown): value is Primitive => null_(value) || primitiveTypes.has(typeof value);
export const integer = (value: any): value is number => Number.isInteger(value); export const integer = (value: unknown): value is number => Number.isInteger(value as number);
export const safeInteger = (value: any): value is number => Number.isSafeInteger(value); export const safeInteger = (value: unknown): value is number => Number.isSafeInteger(value as number);
export const plainObject = (value: unknown) => { export const plainObject = (value: unknown) => {
// From: https://github.com/sindresorhus/is-plain-obj/blob/master/index.js // From: https://github.com/sindresorhus/is-plain-obj/blob/master/index.js
@ -238,7 +238,7 @@ namespace is { // tslint:disable-line:no-namespace
}; };
const isValidLength = (value: unknown) => safeInteger(value) && value > -1; const isValidLength = (value: unknown) => safeInteger(value) && value > -1;
export const arrayLike = (value: any): value is ArrayLike => !nullOrUndefined(value) && !function_(value) && isValidLength(value.length); export const arrayLike = (value: unknown): value is ArrayLike => !nullOrUndefined(value) && !function_(value) && isValidLength((value as ArrayLike).length);
export const inRange = (value: number, range: number | number[]) => { export const inRange = (value: number, range: number | number[]) => {
if (number(range)) { if (number(range)) {
@ -261,11 +261,11 @@ namespace is { // tslint:disable-line:no-namespace
'nodeValue' 'nodeValue'
]; ];
export const domElement = (value: any): value is DomElement => object(value) as unknown && value.nodeType === NODE_TYPE_ELEMENT && string(value.nodeName) && export const domElement = (value: unknown): value is DomElement => object(value) && (value as DomElement).nodeType === NODE_TYPE_ELEMENT && string((value as DomElement).nodeName) &&
!plainObject(value) && DOM_PROPERTIES_TO_CHECK.every(property => property in value); !plainObject(value) && DOM_PROPERTIES_TO_CHECK.every(property => property in (value as DomElement));
export const observable = (value: any) => Boolean(value && value[symbolObservable] && value === value[symbolObservable]()); export const observable = (value: unknown) => Boolean(value && (value as any)[symbolObservable] && value === (value as any)[symbolObservable]());
export const nodeStream = (value: any): value is NodeStream => !nullOrUndefined(value) && isObject(value) as unknown && function_(value.pipe) && !observable(value); export const nodeStream = (value: unknown): value is NodeStream => !nullOrUndefined(value) && isObject(value) as unknown && function_((value as NodeStream).pipe) && !observable(value);
export const infinite = (value: unknown) => value === Infinity || value === -Infinity; export const infinite = (value: unknown) => value === Infinity || value === -Infinity;

8
source/tests/test.ts
View file

@ -21,8 +21,8 @@ const {document} = window;
const createDomElement = (element: string) => document.createElement(element); const createDomElement = (element: string) => document.createElement(element);
interface Test { interface Test {
is(value: any): boolean; is(value: unknown): boolean;
fixtures: any[]; fixtures: unknown[];
} }
const types = new Map<string, Test>([ const types = new Map<string, Test>([
@ -106,7 +106,7 @@ const types = new Map<string, Test>([
function () {}, function () {},
() => {}, () => {},
async function () {}, async function () {},
function * (): any {} function * (): unknown {}
// tslint:enable:no-unused no-empty no-unused-variable only-arrow-functions no-function-expression // tslint:enable:no-unused no-empty no-unused-variable only-arrow-functions no-function-expression
] ]
}], }],
@ -377,7 +377,7 @@ const types = new Map<string, Test>([
]); ]);
// This ensures a certain method matches only the types it's supposed to and none of the other methods' types // This ensures a certain method matches only the types it's supposed to and none of the other methods' types
const testType = (t: TestContext & Context<any>, type: string, exclude?: string[]) => { const testType = (t: TestContext & Context<unknown>, type: string, exclude?: string[]) => {
const testData = types.get(type); const testData = types.get(type);
if (testData === undefined) { if (testData === undefined) {