428 lines
20 KiB
JavaScript
428 lines
20 KiB
JavaScript
"use strict";
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/// <reference lib="es2018"/>
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/// <reference lib="dom"/>
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/// <reference types="node"/>
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Object.defineProperty(exports, "__esModule", { value: true });
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const typedArrayTypeNames = [
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'Int8Array',
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'Uint8Array',
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'Uint8ClampedArray',
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'Int16Array',
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'Uint16Array',
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'Int32Array',
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'Uint32Array',
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'Float32Array',
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'Float64Array',
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'BigInt64Array',
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'BigUint64Array'
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];
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function isTypedArrayName(name) {
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return typedArrayTypeNames.includes(name);
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}
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const objectTypeNames = [
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'Function',
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'Generator',
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'AsyncGenerator',
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'GeneratorFunction',
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'AsyncGeneratorFunction',
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'AsyncFunction',
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'Observable',
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'Array',
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'Buffer',
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'Object',
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'RegExp',
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'Date',
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'Error',
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'Map',
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'Set',
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'WeakMap',
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'WeakSet',
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'ArrayBuffer',
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'SharedArrayBuffer',
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'DataView',
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'Promise',
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'URL',
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'FormData',
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'URLSearchParams',
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'HTMLElement',
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...typedArrayTypeNames
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];
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function isObjectTypeName(name) {
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return objectTypeNames.includes(name);
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}
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const primitiveTypeNames = [
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'null',
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'undefined',
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'string',
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'number',
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'bigint',
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'boolean',
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'symbol'
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];
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function isPrimitiveTypeName(name) {
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return primitiveTypeNames.includes(name);
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}
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// eslint-disable-next-line @typescript-eslint/ban-types
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function isOfType(type) {
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return (value) => typeof value === type;
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}
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const { toString } = Object.prototype;
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const getObjectType = (value) => {
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const objectTypeName = toString.call(value).slice(8, -1);
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if (/HTML\w+Element/.test(objectTypeName) && is.domElement(value)) {
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return 'HTMLElement';
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}
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if (isObjectTypeName(objectTypeName)) {
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return objectTypeName;
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}
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return undefined;
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};
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const isObjectOfType = (type) => (value) => getObjectType(value) === type;
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function is(value) {
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if (value === null) {
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return 'null';
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}
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switch (typeof value) {
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case 'undefined':
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return 'undefined';
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case 'string':
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return 'string';
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case 'number':
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return 'number';
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case 'boolean':
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return 'boolean';
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case 'function':
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return 'Function';
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case 'bigint':
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return 'bigint';
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case 'symbol':
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return 'symbol';
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default:
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}
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if (is.observable(value)) {
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return 'Observable';
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}
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if (is.array(value)) {
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return 'Array';
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}
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if (is.buffer(value)) {
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return 'Buffer';
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}
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const tagType = getObjectType(value);
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if (tagType) {
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return tagType;
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}
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if (value instanceof String || value instanceof Boolean || value instanceof Number) {
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throw new TypeError('Please don\'t use object wrappers for primitive types');
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}
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return 'Object';
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}
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is.undefined = isOfType('undefined');
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is.string = isOfType('string');
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const isNumberType = isOfType('number');
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is.number = (value) => isNumberType(value) && !is.nan(value);
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is.bigint = isOfType('bigint');
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// eslint-disable-next-line @typescript-eslint/ban-types
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is.function_ = isOfType('function');
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is.null_ = (value) => value === null;
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is.class_ = (value) => is.function_(value) && value.toString().startsWith('class ');
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is.boolean = (value) => value === true || value === false;
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is.symbol = isOfType('symbol');
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is.numericString = (value) => is.string(value) && !is.emptyStringOrWhitespace(value) && !Number.isNaN(Number(value));
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is.array = (value, assertion) => {
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if (!Array.isArray(value)) {
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return false;
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}
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if (!is.function_(assertion)) {
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return true;
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}
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return value.every(assertion);
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};
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is.buffer = (value) => { var _a, _b, _c, _d; return (_d = (_c = (_b = (_a = value) === null || _a === void 0 ? void 0 : _a.constructor) === null || _b === void 0 ? void 0 : _b.isBuffer) === null || _c === void 0 ? void 0 : _c.call(_b, value)) !== null && _d !== void 0 ? _d : false; };
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is.nullOrUndefined = (value) => is.null_(value) || is.undefined(value);
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is.object = (value) => !is.null_(value) && (typeof value === 'object' || is.function_(value));
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is.iterable = (value) => { var _a; return is.function_((_a = value) === null || _a === void 0 ? void 0 : _a[Symbol.iterator]); };
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is.asyncIterable = (value) => { var _a; return is.function_((_a = value) === null || _a === void 0 ? void 0 : _a[Symbol.asyncIterator]); };
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is.generator = (value) => is.iterable(value) && is.function_(value.next) && is.function_(value.throw);
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is.asyncGenerator = (value) => is.asyncIterable(value) && is.function_(value.next) && is.function_(value.throw);
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is.nativePromise = (value) => isObjectOfType('Promise')(value);
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const hasPromiseAPI = (value) => {
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var _a, _b;
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return is.function_((_a = value) === null || _a === void 0 ? void 0 : _a.then) &&
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is.function_((_b = value) === null || _b === void 0 ? void 0 : _b.catch);
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};
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is.promise = (value) => is.nativePromise(value) || hasPromiseAPI(value);
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is.generatorFunction = isObjectOfType('GeneratorFunction');
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is.asyncGeneratorFunction = (value) => getObjectType(value) === 'AsyncGeneratorFunction';
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is.asyncFunction = (value) => getObjectType(value) === 'AsyncFunction';
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// eslint-disable-next-line no-prototype-builtins, @typescript-eslint/ban-types
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is.boundFunction = (value) => is.function_(value) && !value.hasOwnProperty('prototype');
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is.regExp = isObjectOfType('RegExp');
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is.date = isObjectOfType('Date');
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is.error = isObjectOfType('Error');
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is.map = (value) => isObjectOfType('Map')(value);
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is.set = (value) => isObjectOfType('Set')(value);
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is.weakMap = (value) => isObjectOfType('WeakMap')(value);
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is.weakSet = (value) => isObjectOfType('WeakSet')(value);
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is.int8Array = isObjectOfType('Int8Array');
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is.uint8Array = isObjectOfType('Uint8Array');
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is.uint8ClampedArray = isObjectOfType('Uint8ClampedArray');
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is.int16Array = isObjectOfType('Int16Array');
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is.uint16Array = isObjectOfType('Uint16Array');
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is.int32Array = isObjectOfType('Int32Array');
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is.uint32Array = isObjectOfType('Uint32Array');
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is.float32Array = isObjectOfType('Float32Array');
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is.float64Array = isObjectOfType('Float64Array');
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is.bigInt64Array = isObjectOfType('BigInt64Array');
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is.bigUint64Array = isObjectOfType('BigUint64Array');
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is.arrayBuffer = isObjectOfType('ArrayBuffer');
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is.sharedArrayBuffer = isObjectOfType('SharedArrayBuffer');
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is.dataView = isObjectOfType('DataView');
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is.directInstanceOf = (instance, class_) => Object.getPrototypeOf(instance) === class_.prototype;
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is.urlInstance = (value) => isObjectOfType('URL')(value);
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is.urlString = (value) => {
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if (!is.string(value)) {
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return false;
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}
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try {
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new URL(value); // eslint-disable-line no-new
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return true;
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}
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catch (_a) {
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return false;
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}
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};
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// TODO: Use the `not` operator with a type guard here when it's available.
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// Example: `is.truthy = (value: unknown): value is (not false | not 0 | not '' | not undefined | not null) => Boolean(value);`
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is.truthy = (value) => Boolean(value);
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// Example: `is.falsy = (value: unknown): value is (not true | 0 | '' | undefined | null) => Boolean(value);`
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is.falsy = (value) => !value;
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is.nan = (value) => Number.isNaN(value);
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is.primitive = (value) => is.null_(value) || isPrimitiveTypeName(typeof value);
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is.integer = (value) => Number.isInteger(value);
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is.safeInteger = (value) => Number.isSafeInteger(value);
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is.plainObject = (value) => {
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// From: https://github.com/sindresorhus/is-plain-obj/blob/main/index.js
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if (toString.call(value) !== '[object Object]') {
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return false;
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}
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const prototype = Object.getPrototypeOf(value);
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return prototype === null || prototype === Object.getPrototypeOf({});
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};
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is.typedArray = (value) => isTypedArrayName(getObjectType(value));
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const isValidLength = (value) => is.safeInteger(value) && value >= 0;
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is.arrayLike = (value) => !is.nullOrUndefined(value) && !is.function_(value) && isValidLength(value.length);
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is.inRange = (value, range) => {
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if (is.number(range)) {
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return value >= Math.min(0, range) && value <= Math.max(range, 0);
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}
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if (is.array(range) && range.length === 2) {
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return value >= Math.min(...range) && value <= Math.max(...range);
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}
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throw new TypeError(`Invalid range: ${JSON.stringify(range)}`);
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};
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const NODE_TYPE_ELEMENT = 1;
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const DOM_PROPERTIES_TO_CHECK = [
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'innerHTML',
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'ownerDocument',
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'style',
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'attributes',
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'nodeValue'
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];
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is.domElement = (value) => {
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return is.object(value) &&
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value.nodeType === NODE_TYPE_ELEMENT &&
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is.string(value.nodeName) &&
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!is.plainObject(value) &&
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DOM_PROPERTIES_TO_CHECK.every(property => property in value);
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};
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is.observable = (value) => {
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var _a, _b, _c, _d;
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if (!value) {
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return false;
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}
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// eslint-disable-next-line no-use-extend-native/no-use-extend-native
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if (value === ((_b = (_a = value)[Symbol.observable]) === null || _b === void 0 ? void 0 : _b.call(_a))) {
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return true;
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}
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if (value === ((_d = (_c = value)['@@observable']) === null || _d === void 0 ? void 0 : _d.call(_c))) {
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return true;
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}
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return false;
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};
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is.nodeStream = (value) => is.object(value) && is.function_(value.pipe) && !is.observable(value);
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is.infinite = (value) => value === Infinity || value === -Infinity;
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const isAbsoluteMod2 = (remainder) => (value) => is.integer(value) && Math.abs(value % 2) === remainder;
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is.evenInteger = isAbsoluteMod2(0);
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is.oddInteger = isAbsoluteMod2(1);
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is.emptyArray = (value) => is.array(value) && value.length === 0;
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is.nonEmptyArray = (value) => is.array(value) && value.length > 0;
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is.emptyString = (value) => is.string(value) && value.length === 0;
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// TODO: Use `not ''` when the `not` operator is available.
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is.nonEmptyString = (value) => is.string(value) && value.length > 0;
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const isWhiteSpaceString = (value) => is.string(value) && !/\S/.test(value);
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is.emptyStringOrWhitespace = (value) => is.emptyString(value) || isWhiteSpaceString(value);
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is.emptyObject = (value) => is.object(value) && !is.map(value) && !is.set(value) && Object.keys(value).length === 0;
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// TODO: Use `not` operator here to remove `Map` and `Set` from type guard:
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// - https://github.com/Microsoft/TypeScript/pull/29317
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is.nonEmptyObject = (value) => is.object(value) && !is.map(value) && !is.set(value) && Object.keys(value).length > 0;
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is.emptySet = (value) => is.set(value) && value.size === 0;
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is.nonEmptySet = (value) => is.set(value) && value.size > 0;
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is.emptyMap = (value) => is.map(value) && value.size === 0;
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is.nonEmptyMap = (value) => is.map(value) && value.size > 0;
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// `PropertyKey` is any value that can be used as an object key (string, number, or symbol)
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is.propertyKey = (value) => is.any([is.string, is.number, is.symbol], value);
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is.formData = (value) => isObjectOfType('FormData')(value);
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is.urlSearchParams = (value) => isObjectOfType('URLSearchParams')(value);
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const predicateOnArray = (method, predicate, values) => {
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if (!is.function_(predicate)) {
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throw new TypeError(`Invalid predicate: ${JSON.stringify(predicate)}`);
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}
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if (values.length === 0) {
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throw new TypeError('Invalid number of values');
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}
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return method.call(values, predicate);
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};
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is.any = (predicate, ...values) => {
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const predicates = is.array(predicate) ? predicate : [predicate];
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return predicates.some(singlePredicate => predicateOnArray(Array.prototype.some, singlePredicate, values));
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};
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is.all = (predicate, ...values) => predicateOnArray(Array.prototype.every, predicate, values);
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const assertType = (condition, description, value, options = {}) => {
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if (!condition) {
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const { multipleValues } = options;
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const valuesMessage = multipleValues ?
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`received values of types ${[
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...new Set(value.map(singleValue => `\`${is(singleValue)}\``))
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].join(', ')}` :
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`received value of type \`${is(value)}\``;
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throw new TypeError(`Expected value which is \`${description}\`, ${valuesMessage}.`);
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}
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};
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exports.assert = {
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// Unknowns.
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undefined: (value) => assertType(is.undefined(value), 'undefined', value),
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string: (value) => assertType(is.string(value), 'string', value),
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number: (value) => assertType(is.number(value), 'number', value),
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bigint: (value) => assertType(is.bigint(value), 'bigint', value),
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// eslint-disable-next-line @typescript-eslint/ban-types
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function_: (value) => assertType(is.function_(value), 'Function', value),
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null_: (value) => assertType(is.null_(value), 'null', value),
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class_: (value) => assertType(is.class_(value), "Class" /* class_ */, value),
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boolean: (value) => assertType(is.boolean(value), 'boolean', value),
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symbol: (value) => assertType(is.symbol(value), 'symbol', value),
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numericString: (value) => assertType(is.numericString(value), "string with a number" /* numericString */, value),
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array: (value, assertion) => {
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const assert = assertType;
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assert(is.array(value), 'Array', value);
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if (assertion) {
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value.forEach(assertion);
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}
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},
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buffer: (value) => assertType(is.buffer(value), 'Buffer', value),
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nullOrUndefined: (value) => assertType(is.nullOrUndefined(value), "null or undefined" /* nullOrUndefined */, value),
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object: (value) => assertType(is.object(value), 'Object', value),
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iterable: (value) => assertType(is.iterable(value), "Iterable" /* iterable */, value),
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asyncIterable: (value) => assertType(is.asyncIterable(value), "AsyncIterable" /* asyncIterable */, value),
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generator: (value) => assertType(is.generator(value), 'Generator', value),
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asyncGenerator: (value) => assertType(is.asyncGenerator(value), 'AsyncGenerator', value),
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nativePromise: (value) => assertType(is.nativePromise(value), "native Promise" /* nativePromise */, value),
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promise: (value) => assertType(is.promise(value), 'Promise', value),
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generatorFunction: (value) => assertType(is.generatorFunction(value), 'GeneratorFunction', value),
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asyncGeneratorFunction: (value) => assertType(is.asyncGeneratorFunction(value), 'AsyncGeneratorFunction', value),
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// eslint-disable-next-line @typescript-eslint/ban-types
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asyncFunction: (value) => assertType(is.asyncFunction(value), 'AsyncFunction', value),
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// eslint-disable-next-line @typescript-eslint/ban-types
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boundFunction: (value) => assertType(is.boundFunction(value), 'Function', value),
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regExp: (value) => assertType(is.regExp(value), 'RegExp', value),
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date: (value) => assertType(is.date(value), 'Date', value),
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error: (value) => assertType(is.error(value), 'Error', value),
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map: (value) => assertType(is.map(value), 'Map', value),
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set: (value) => assertType(is.set(value), 'Set', value),
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weakMap: (value) => assertType(is.weakMap(value), 'WeakMap', value),
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weakSet: (value) => assertType(is.weakSet(value), 'WeakSet', value),
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int8Array: (value) => assertType(is.int8Array(value), 'Int8Array', value),
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uint8Array: (value) => assertType(is.uint8Array(value), 'Uint8Array', value),
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uint8ClampedArray: (value) => assertType(is.uint8ClampedArray(value), 'Uint8ClampedArray', value),
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int16Array: (value) => assertType(is.int16Array(value), 'Int16Array', value),
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uint16Array: (value) => assertType(is.uint16Array(value), 'Uint16Array', value),
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int32Array: (value) => assertType(is.int32Array(value), 'Int32Array', value),
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uint32Array: (value) => assertType(is.uint32Array(value), 'Uint32Array', value),
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float32Array: (value) => assertType(is.float32Array(value), 'Float32Array', value),
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float64Array: (value) => assertType(is.float64Array(value), 'Float64Array', value),
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bigInt64Array: (value) => assertType(is.bigInt64Array(value), 'BigInt64Array', value),
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bigUint64Array: (value) => assertType(is.bigUint64Array(value), 'BigUint64Array', value),
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arrayBuffer: (value) => assertType(is.arrayBuffer(value), 'ArrayBuffer', value),
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sharedArrayBuffer: (value) => assertType(is.sharedArrayBuffer(value), 'SharedArrayBuffer', value),
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dataView: (value) => assertType(is.dataView(value), 'DataView', value),
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urlInstance: (value) => assertType(is.urlInstance(value), 'URL', value),
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urlString: (value) => assertType(is.urlString(value), "string with a URL" /* urlString */, value),
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truthy: (value) => assertType(is.truthy(value), "truthy" /* truthy */, value),
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falsy: (value) => assertType(is.falsy(value), "falsy" /* falsy */, value),
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nan: (value) => assertType(is.nan(value), "NaN" /* nan */, value),
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primitive: (value) => assertType(is.primitive(value), "primitive" /* primitive */, value),
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integer: (value) => assertType(is.integer(value), "integer" /* integer */, value),
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safeInteger: (value) => assertType(is.safeInteger(value), "integer" /* safeInteger */, value),
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plainObject: (value) => assertType(is.plainObject(value), "plain object" /* plainObject */, value),
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typedArray: (value) => assertType(is.typedArray(value), "TypedArray" /* typedArray */, value),
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arrayLike: (value) => assertType(is.arrayLike(value), "array-like" /* arrayLike */, value),
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domElement: (value) => assertType(is.domElement(value), "HTMLElement" /* domElement */, value),
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observable: (value) => assertType(is.observable(value), 'Observable', value),
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nodeStream: (value) => assertType(is.nodeStream(value), "Node.js Stream" /* nodeStream */, value),
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infinite: (value) => assertType(is.infinite(value), "infinite number" /* infinite */, value),
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emptyArray: (value) => assertType(is.emptyArray(value), "empty array" /* emptyArray */, value),
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nonEmptyArray: (value) => assertType(is.nonEmptyArray(value), "non-empty array" /* nonEmptyArray */, value),
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emptyString: (value) => assertType(is.emptyString(value), "empty string" /* emptyString */, value),
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nonEmptyString: (value) => assertType(is.nonEmptyString(value), "non-empty string" /* nonEmptyString */, value),
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emptyStringOrWhitespace: (value) => assertType(is.emptyStringOrWhitespace(value), "empty string or whitespace" /* emptyStringOrWhitespace */, value),
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emptyObject: (value) => assertType(is.emptyObject(value), "empty object" /* emptyObject */, value),
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|
nonEmptyObject: (value) => assertType(is.nonEmptyObject(value), "non-empty object" /* nonEmptyObject */, value),
|
|
emptySet: (value) => assertType(is.emptySet(value), "empty set" /* emptySet */, value),
|
|
nonEmptySet: (value) => assertType(is.nonEmptySet(value), "non-empty set" /* nonEmptySet */, value),
|
|
emptyMap: (value) => assertType(is.emptyMap(value), "empty map" /* emptyMap */, value),
|
|
nonEmptyMap: (value) => assertType(is.nonEmptyMap(value), "non-empty map" /* nonEmptyMap */, value),
|
|
propertyKey: (value) => assertType(is.propertyKey(value), 'PropertyKey', value),
|
|
formData: (value) => assertType(is.formData(value), 'FormData', value),
|
|
urlSearchParams: (value) => assertType(is.urlSearchParams(value), 'URLSearchParams', value),
|
|
// Numbers.
|
|
evenInteger: (value) => assertType(is.evenInteger(value), "even integer" /* evenInteger */, value),
|
|
oddInteger: (value) => assertType(is.oddInteger(value), "odd integer" /* oddInteger */, value),
|
|
// Two arguments.
|
|
directInstanceOf: (instance, class_) => assertType(is.directInstanceOf(instance, class_), "T" /* directInstanceOf */, instance),
|
|
inRange: (value, range) => assertType(is.inRange(value, range), "in range" /* inRange */, value),
|
|
// Variadic functions.
|
|
any: (predicate, ...values) => {
|
|
return assertType(is.any(predicate, ...values), "predicate returns truthy for any value" /* any */, values, { multipleValues: true });
|
|
},
|
|
all: (predicate, ...values) => assertType(is.all(predicate, ...values), "predicate returns truthy for all values" /* all */, values, { multipleValues: true })
|
|
};
|
|
// Some few keywords are reserved, but we'll populate them for Node.js users
|
|
// See https://github.com/Microsoft/TypeScript/issues/2536
|
|
Object.defineProperties(is, {
|
|
class: {
|
|
value: is.class_
|
|
},
|
|
function: {
|
|
value: is.function_
|
|
},
|
|
null: {
|
|
value: is.null_
|
|
}
|
|
});
|
|
Object.defineProperties(exports.assert, {
|
|
class: {
|
|
value: exports.assert.class_
|
|
},
|
|
function: {
|
|
value: exports.assert.function_
|
|
},
|
|
null: {
|
|
value: exports.assert.null_
|
|
}
|
|
});
|
|
exports.default = is;
|
|
// For CommonJS default export support
|
|
module.exports = is;
|
|
module.exports.default = is;
|
|
module.exports.assert = exports.assert;
|