Use string literals instead of enums

This commit is contained in:
Bjorn Stromberg 2020-06-04 20:24:47 +09:00
parent 9d404cad2e
commit 6824f1446d
2 changed files with 205 additions and 234 deletions

View file

@ -4,49 +4,73 @@
export type Class<T = unknown> = new (...args: any[]) => T;
export const enum TypeName {
null = 'null',
boolean = 'boolean',
undefined = 'undefined',
string = 'string',
number = 'number',
bigint = 'bigint',
symbol = 'symbol',
Function = 'Function',
Generator = 'Generator',
AsyncGenerator = 'AsyncGenerator',
GeneratorFunction = 'GeneratorFunction',
AsyncGeneratorFunction = 'AsyncGeneratorFunction',
AsyncFunction = 'AsyncFunction',
Observable = 'Observable',
Array = 'Array',
Buffer = 'Buffer',
Object = 'Object',
RegExp = 'RegExp',
Date = 'Date',
Error = 'Error',
Map = 'Map',
Set = 'Set',
WeakMap = 'WeakMap',
WeakSet = 'WeakSet',
Int8Array = 'Int8Array',
Uint8Array = 'Uint8Array',
Uint8ClampedArray = 'Uint8ClampedArray',
Int16Array = 'Int16Array',
Uint16Array = 'Uint16Array',
Int32Array = 'Int32Array',
Uint32Array = 'Uint32Array',
Float32Array = 'Float32Array',
Float64Array = 'Float64Array',
BigInt64Array = 'BigInt64Array',
BigUint64Array = 'BigUint64Array',
ArrayBuffer = 'ArrayBuffer',
SharedArrayBuffer = 'SharedArrayBuffer',
DataView = 'DataView',
Promise = 'Promise',
URL = 'URL'
const objectTypeNames = [
'Function',
'Generator',
'AsyncGenerator',
'GeneratorFunction',
'AsyncGeneratorFunction',
'AsyncFunction',
'Observable',
'Array',
'Buffer',
'Object',
'RegExp',
'Date',
'Error',
'Map',
'Set',
'WeakMap',
'WeakSet',
'ArrayBuffer',
'SharedArrayBuffer',
'DataView',
'Promise',
'URL'
] as const;
type ObjectTypeName = typeof objectTypeNames[number];
const primitives = {
null: null,
undefined,
string: String(),
number: Number(),
bigint: BigInt(0),
boolean: Boolean(),
symbol: Symbol('')
} as const;
type PrimitiveTypeName = keyof typeof primitives;
export type Primitive = typeof primitives[PrimitiveTypeName];
function isPrimitiveTypeName(name: string): name is PrimitiveTypeName {
return Object.prototype.hasOwnProperty.call(primitives, name);
}
const typedArrays = {
Int8Array: new Int8Array(),
Uint8Array: new Uint8Array(),
Uint8ClampedArray: new Uint8ClampedArray(),
Int16Array: new Int16Array(),
Uint16Array: new Uint16Array(),
Int32Array: new Int32Array(),
Uint32Array: new Uint32Array(),
Float32Array: new Float32Array(),
Float64Array: new Float64Array(),
BigInt64Array: new BigInt64Array(),
BigUint64Array: new BigUint64Array()
} as const;
type TypedArrayTypeName = keyof typeof typedArrays;
export type TypedArray = typeof typedArrays[TypedArrayTypeName];
function isTypedArrayName(value: any): value is TypedArrayTypeName {
return Object.prototype.hasOwnProperty.call(typedArrays, value);
}
export type TypeName = ObjectTypeName | PrimitiveTypeName | TypedArrayTypeName;
const {toString} = Object.prototype;
const isOfType = <T>(type: string) => (value: unknown): value is T => typeof value === type;
@ -64,41 +88,41 @@ const isObjectOfType = <T>(type: TypeName) => (value: unknown): value is T => ge
function is(value: unknown): TypeName {
switch (value) {
case null:
return TypeName.null;
return 'null';
case true:
case false:
return TypeName.boolean;
return 'boolean';
default:
}
switch (typeof value) {
case 'undefined':
return TypeName.undefined;
return 'undefined';
case 'string':
return TypeName.string;
return 'string';
case 'number':
return TypeName.number;
return 'number';
case 'bigint':
return TypeName.bigint;
return 'bigint';
case 'symbol':
return TypeName.symbol;
return 'symbol';
default:
}
if (is.function_(value)) {
return TypeName.Function;
return 'Function';
}
if (is.observable(value)) {
return TypeName.Observable;
return 'Observable';
}
if (is.array(value)) {
return TypeName.Array;
return 'Array';
}
if (is.buffer(value)) {
return TypeName.Buffer;
return 'Buffer';
}
const tagType = getObjectType(value);
@ -110,7 +134,7 @@ function is(value: unknown): TypeName {
throw new TypeError('Please don\'t use object wrappers for primitive types');
}
return TypeName.Object;
return 'Object';
}
is.undefined = isOfType<undefined>('undefined');
@ -146,7 +170,7 @@ is.generator = (value: unknown): value is Generator => is.iterable(value) && is.
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);
isObjectOfType<Promise<T>>('Promise')(value);
const hasPromiseAPI = <T = unknown>(value: unknown): value is Promise<T> =>
is.function_((value as Promise<T>)?.then) &&
@ -154,41 +178,41 @@ const hasPromiseAPI = <T = unknown>(value: unknown): value is Promise<T> =>
is.promise = <T = unknown>(value: unknown): value is Promise<T> => is.nativePromise(value) || hasPromiseAPI(value);
is.generatorFunction = isObjectOfType<GeneratorFunction>(TypeName.GeneratorFunction);
is.generatorFunction = isObjectOfType<GeneratorFunction>('GeneratorFunction');
is.asyncGeneratorFunction = (value: unknown): value is ((...args: any[]) => Promise<unknown>) => getObjectType(value) === TypeName.AsyncGeneratorFunction;
is.asyncGeneratorFunction = (value: unknown): value is ((...args: any[]) => Promise<unknown>) => getObjectType(value) === 'AsyncGeneratorFunction';
is.asyncFunction = <T = unknown>(value: unknown): value is ((...args: any[]) => Promise<T>) => getObjectType(value) === TypeName.AsyncFunction;
is.asyncFunction = <T = unknown>(value: unknown): value is ((...args: any[]) => Promise<T>) => getObjectType(value) === 'AsyncFunction';
// eslint-disable-next-line no-prototype-builtins, @typescript-eslint/ban-types
is.boundFunction = (value: unknown): value is Function => is.function_(value) && !value.hasOwnProperty('prototype');
is.regExp = isObjectOfType<RegExp>(TypeName.RegExp);
is.date = isObjectOfType<Date>(TypeName.Date);
is.error = isObjectOfType<Error>(TypeName.Error);
is.map = <Key = unknown, Value = unknown>(value: unknown): value is Map<Key, Value> => isObjectOfType<Map<Key, Value>>(TypeName.Map)(value);
is.set = <T = unknown>(value: unknown): value is Set<T> => isObjectOfType<Set<T>>(TypeName.Set)(value);
is.weakMap = <Key extends object = object, Value = unknown>(value: unknown): value is WeakMap<Key, Value> => isObjectOfType<WeakMap<Key, Value>>(TypeName.WeakMap)(value);
is.weakSet = (value: unknown): value is WeakSet<object> => isObjectOfType<WeakSet<object>>(TypeName.WeakSet)(value);
is.regExp = isObjectOfType<RegExp>('RegExp');
is.date = isObjectOfType<Date>('Date');
is.error = isObjectOfType<Error>('Error');
is.map = <Key = unknown, Value = unknown>(value: unknown): value is Map<Key, Value> => isObjectOfType<Map<Key, Value>>('Map')(value);
is.set = <T = unknown>(value: unknown): value is Set<T> => isObjectOfType<Set<T>>('Set')(value);
is.weakMap = <Key extends object = object, Value = unknown>(value: unknown): value is WeakMap<Key, Value> => isObjectOfType<WeakMap<Key, Value>>('WeakMap')(value);
is.weakSet = (value: unknown): value is WeakSet<object> => isObjectOfType<WeakSet<object>>('WeakSet')(value);
is.int8Array = isObjectOfType<Int8Array>(TypeName.Int8Array);
is.uint8Array = isObjectOfType<Uint8Array>(TypeName.Uint8Array);
is.uint8ClampedArray = isObjectOfType<Uint8ClampedArray>(TypeName.Uint8ClampedArray);
is.int16Array = isObjectOfType<Int16Array>(TypeName.Int16Array);
is.uint16Array = isObjectOfType<Uint16Array>(TypeName.Uint16Array);
is.int32Array = isObjectOfType<Int32Array>(TypeName.Int32Array);
is.uint32Array = isObjectOfType<Uint32Array>(TypeName.Uint32Array);
is.float32Array = isObjectOfType<Float32Array>(TypeName.Float32Array);
is.float64Array = isObjectOfType<Float64Array>(TypeName.Float64Array);
is.bigInt64Array = isObjectOfType<BigInt64Array>(TypeName.BigInt64Array);
is.bigUint64Array = isObjectOfType<BigUint64Array>(TypeName.BigUint64Array);
is.int8Array = isObjectOfType<Int8Array>('Int8Array');
is.uint8Array = isObjectOfType<Uint8Array>('Uint8Array');
is.uint8ClampedArray = isObjectOfType<Uint8ClampedArray>('Uint8ClampedArray');
is.int16Array = isObjectOfType<Int16Array>('Int16Array');
is.uint16Array = isObjectOfType<Uint16Array>('Uint16Array');
is.int32Array = isObjectOfType<Int32Array>('Int32Array');
is.uint32Array = isObjectOfType<Uint32Array>('Uint32Array');
is.float32Array = isObjectOfType<Float32Array>('Float32Array');
is.float64Array = isObjectOfType<Float64Array>('Float64Array');
is.bigInt64Array = isObjectOfType<BigInt64Array>('BigInt64Array');
is.bigUint64Array = isObjectOfType<BigUint64Array>('BigUint64Array');
is.arrayBuffer = isObjectOfType<ArrayBuffer>(TypeName.ArrayBuffer);
is.sharedArrayBuffer = isObjectOfType<SharedArrayBuffer>(TypeName.SharedArrayBuffer);
is.dataView = isObjectOfType<DataView>(TypeName.DataView);
is.arrayBuffer = isObjectOfType<ArrayBuffer>('ArrayBuffer');
is.sharedArrayBuffer = isObjectOfType<SharedArrayBuffer>('SharedArrayBuffer');
is.dataView = isObjectOfType<DataView>('DataView');
is.directInstanceOf = <T>(instance: unknown, class_: Class<T>): instance is T => Object.getPrototypeOf(instance) === class_.prototype;
is.urlInstance = (value: unknown): value is URL => isObjectOfType<URL>(TypeName.URL)(value);
is.urlInstance = (value: unknown): value is URL => isObjectOfType<URL>('URL')(value);
is.urlString = (value: unknown): value is string => {
if (!is.string(value)) {
@ -211,33 +235,14 @@ is.falsy = (value: unknown) => !value;
is.nan = (value: unknown) => Number.isNaN(value as number);
const primitiveTypeOfTypes = new Set([
'undefined',
'string',
'number',
'bigint',
'boolean',
'symbol'
]);
// TODO: This should be able to be `not object` when the `not` operator is out
export type Primitive =
| null
| undefined
| string
| number
| bigint
| boolean
| symbol;
is.primitive = (value: unknown): value is Primitive => is.null_(value) || primitiveTypeOfTypes.has(typeof value);
is.primitive = (value: unknown): value is Primitive => is.null_(value) || isPrimitiveTypeName(typeof value);
is.integer = (value: unknown): value is number => Number.isInteger(value as number);
is.safeInteger = (value: unknown): value is number => Number.isSafeInteger(value as number);
is.plainObject = <Value = unknown>(value: unknown): value is Record<string, Value> => {
// From: https://github.com/sindresorhus/is-plain-obj/blob/master/index.js
if (getObjectType(value) !== TypeName.Object) {
if (getObjectType(value) !== 'Object') {
return false;
}
@ -246,41 +251,7 @@ is.plainObject = <Value = unknown>(value: unknown): value is Record<string, Valu
return prototype === null || prototype === Object.getPrototypeOf({});
};
const typedArrayTypes = new Set([
TypeName.Int8Array,
TypeName.Uint8Array,
TypeName.Uint8ClampedArray,
TypeName.Int16Array,
TypeName.Uint16Array,
TypeName.Int32Array,
TypeName.Uint32Array,
TypeName.Float32Array,
TypeName.Float64Array,
TypeName.BigInt64Array,
TypeName.BigUint64Array
]);
export type TypedArray =
| Int8Array
| Uint8Array
| Uint8ClampedArray
| Int16Array
| Uint16Array
| Int32Array
| Uint32Array
| Float32Array
| Float64Array
| BigInt64Array
| BigUint64Array;
is.typedArray = (value: unknown): value is TypedArray => {
const objectType = getObjectType(value);
if (objectType === undefined) {
return false;
}
return typedArrayTypes.has(objectType);
};
is.typedArray = (value: unknown): value is TypedArray => isTypedArrayName(getObjectType(value));
export interface ArrayLike<T> {
readonly [index: number]: T;
@ -537,55 +508,55 @@ interface Assert {
export const assert: Assert = {
// Unknowns.
undefined: (value: unknown): asserts value is undefined => assertType(is.undefined(value), TypeName.undefined, value),
string: (value: unknown): asserts value is string => assertType(is.string(value), TypeName.string, value),
number: (value: unknown): asserts value is number => assertType(is.number(value), TypeName.number, value),
bigint: (value: unknown): asserts value is bigint => assertType(is.bigint(value), TypeName.bigint, value),
undefined: (value: unknown): asserts value is undefined => assertType(is.undefined(value), 'undefined', value),
string: (value: unknown): asserts value is string => assertType(is.string(value), 'string', value),
number: (value: unknown): asserts value is number => assertType(is.number(value), 'number', value),
bigint: (value: unknown): asserts value is bigint => assertType(is.bigint(value), 'bigint', value),
// eslint-disable-next-line @typescript-eslint/ban-types
function_: (value: unknown): asserts value is Function => assertType(is.function_(value), TypeName.Function, value),
null_: (value: unknown): asserts value is null => assertType(is.null_(value), TypeName.null, value),
function_: (value: unknown): asserts value is Function => assertType(is.function_(value), 'Function', value),
null_: (value: unknown): asserts value is null => assertType(is.null_(value), 'null', value),
class_: (value: unknown): asserts value is Class => assertType(is.class_(value), AssertionTypeDescription.class_, value),
boolean: (value: unknown): asserts value is boolean => assertType(is.boolean(value), TypeName.boolean, value),
symbol: (value: unknown): asserts value is symbol => assertType(is.symbol(value), TypeName.symbol, value),
boolean: (value: unknown): asserts value is boolean => assertType(is.boolean(value), 'boolean', value),
symbol: (value: unknown): asserts value is symbol => assertType(is.symbol(value), 'symbol', value),
numericString: (value: unknown): asserts value is string => assertType(is.numericString(value), AssertionTypeDescription.numericString, value),
array: <T = unknown>(value: unknown): asserts value is T[] => assertType(is.array(value), TypeName.Array, value),
buffer: (value: unknown): asserts value is Buffer => assertType(is.buffer(value), TypeName.Buffer, value),
array: <T = unknown>(value: unknown): asserts value is T[] => assertType(is.array(value), 'Array', value),
buffer: (value: unknown): asserts value is Buffer => assertType(is.buffer(value), 'Buffer', value),
nullOrUndefined: (value: unknown): asserts value is null | undefined => assertType(is.nullOrUndefined(value), AssertionTypeDescription.nullOrUndefined, value),
object: (value: unknown): asserts value is object => assertType(is.object(value), TypeName.Object, value),
object: (value: unknown): asserts value is object => assertType(is.object(value), 'Object', value),
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),
generator: (value: unknown): asserts value is Generator => assertType(is.generator(value), 'Generator', value),
asyncGenerator: (value: unknown): asserts value is AsyncGenerator => assertType(is.asyncGenerator(value), '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),
promise: <T = unknown>(value: unknown): asserts value is Promise<T> => assertType(is.promise(value), 'Promise', value),
generatorFunction: (value: unknown): asserts value is GeneratorFunction => assertType(is.generatorFunction(value), 'GeneratorFunction', value),
asyncGeneratorFunction: (value: unknown): asserts value is AsyncGeneratorFunction => assertType(is.asyncGeneratorFunction(value), 'AsyncGeneratorFunction', value),
// eslint-disable-next-line @typescript-eslint/ban-types
asyncFunction: (value: unknown): asserts value is Function => assertType(is.asyncFunction(value), TypeName.AsyncFunction, value),
asyncFunction: (value: unknown): asserts value is Function => assertType(is.asyncFunction(value), 'AsyncFunction', value),
// eslint-disable-next-line @typescript-eslint/ban-types
boundFunction: (value: unknown): asserts value is Function => assertType(is.boundFunction(value), TypeName.Function, value),
regExp: (value: unknown): asserts value is RegExp => assertType(is.regExp(value), TypeName.RegExp, value),
date: (value: unknown): asserts value is Date => assertType(is.date(value), TypeName.Date, value),
error: (value: unknown): asserts value is Error => assertType(is.error(value), TypeName.Error, value),
map: <Key = unknown, Value = unknown>(value: unknown): asserts value is Map<Key, Value> => assertType(is.map(value), TypeName.Map, value),
set: <T = unknown>(value: unknown): asserts value is Set<T> => assertType(is.set(value), TypeName.Set, value),
weakMap: <Key extends object = object, Value = unknown>(value: unknown): asserts value is WeakMap<Key, Value> => assertType(is.weakMap(value), TypeName.WeakMap, value),
weakSet: <T extends object = object>(value: unknown): asserts value is WeakSet<T> => assertType(is.weakSet(value), TypeName.WeakSet, value),
int8Array: (value: unknown): asserts value is Int8Array => assertType(is.int8Array(value), TypeName.Int8Array, value),
uint8Array: (value: unknown): asserts value is Uint8Array => assertType(is.uint8Array(value), TypeName.Uint8Array, value),
uint8ClampedArray: (value: unknown): asserts value is Uint8ClampedArray => assertType(is.uint8ClampedArray(value), TypeName.Uint8ClampedArray, value),
int16Array: (value: unknown): asserts value is Int16Array => assertType(is.int16Array(value), TypeName.Int16Array, value),
uint16Array: (value: unknown): asserts value is Uint16Array => assertType(is.uint16Array(value), TypeName.Uint16Array, value),
int32Array: (value: unknown): asserts value is Int32Array => assertType(is.int32Array(value), TypeName.Int32Array, value),
uint32Array: (value: unknown): asserts value is Uint32Array => assertType(is.uint32Array(value), TypeName.Uint32Array, value),
float32Array: (value: unknown): asserts value is Float32Array => assertType(is.float32Array(value), TypeName.Float32Array, value),
float64Array: (value: unknown): asserts value is Float64Array => assertType(is.float64Array(value), TypeName.Float64Array, value),
bigInt64Array: (value: unknown): asserts value is BigInt64Array => assertType(is.bigInt64Array(value), TypeName.BigInt64Array, value),
bigUint64Array: (value: unknown): asserts value is BigUint64Array => assertType(is.bigUint64Array(value), TypeName.BigUint64Array, value),
arrayBuffer: (value: unknown): asserts value is ArrayBuffer => assertType(is.arrayBuffer(value), TypeName.ArrayBuffer, value),
sharedArrayBuffer: (value: unknown): asserts value is SharedArrayBuffer => assertType(is.sharedArrayBuffer(value), TypeName.SharedArrayBuffer, value),
dataView: (value: unknown): asserts value is DataView => assertType(is.dataView(value), TypeName.DataView, value),
urlInstance: (value: unknown): asserts value is URL => assertType(is.urlInstance(value), TypeName.URL, value),
boundFunction: (value: unknown): asserts value is Function => assertType(is.boundFunction(value), 'Function', value),
regExp: (value: unknown): asserts value is RegExp => assertType(is.regExp(value), 'RegExp', value),
date: (value: unknown): asserts value is Date => assertType(is.date(value), 'Date', value),
error: (value: unknown): asserts value is Error => assertType(is.error(value), 'Error', value),
map: <Key = unknown, Value = unknown>(value: unknown): asserts value is Map<Key, Value> => assertType(is.map(value), 'Map', value),
set: <T = unknown>(value: unknown): asserts value is Set<T> => assertType(is.set(value), 'Set', value),
weakMap: <Key extends object = object, Value = unknown>(value: unknown): asserts value is WeakMap<Key, Value> => assertType(is.weakMap(value), 'WeakMap', value),
weakSet: <T extends object = object>(value: unknown): asserts value is WeakSet<T> => assertType(is.weakSet(value), 'WeakSet', value),
int8Array: (value: unknown): asserts value is Int8Array => assertType(is.int8Array(value), 'Int8Array', value),
uint8Array: (value: unknown): asserts value is Uint8Array => assertType(is.uint8Array(value), 'Uint8Array', value),
uint8ClampedArray: (value: unknown): asserts value is Uint8ClampedArray => assertType(is.uint8ClampedArray(value), 'Uint8ClampedArray', value),
int16Array: (value: unknown): asserts value is Int16Array => assertType(is.int16Array(value), 'Int16Array', value),
uint16Array: (value: unknown): asserts value is Uint16Array => assertType(is.uint16Array(value), 'Uint16Array', value),
int32Array: (value: unknown): asserts value is Int32Array => assertType(is.int32Array(value), 'Int32Array', value),
uint32Array: (value: unknown): asserts value is Uint32Array => assertType(is.uint32Array(value), 'Uint32Array', value),
float32Array: (value: unknown): asserts value is Float32Array => assertType(is.float32Array(value), 'Float32Array', value),
float64Array: (value: unknown): asserts value is Float64Array => assertType(is.float64Array(value), 'Float64Array', value),
bigInt64Array: (value: unknown): asserts value is BigInt64Array => assertType(is.bigInt64Array(value), 'BigInt64Array', value),
bigUint64Array: (value: unknown): asserts value is BigUint64Array => assertType(is.bigUint64Array(value), 'BigUint64Array', value),
arrayBuffer: (value: unknown): asserts value is ArrayBuffer => assertType(is.arrayBuffer(value), 'ArrayBuffer', value),
sharedArrayBuffer: (value: unknown): asserts value is SharedArrayBuffer => assertType(is.sharedArrayBuffer(value), 'SharedArrayBuffer', value),
dataView: (value: unknown): asserts value is DataView => assertType(is.dataView(value), 'DataView', value),
urlInstance: (value: unknown): asserts value is URL => assertType(is.urlInstance(value), 'URL', value),
urlString: (value: unknown): asserts value is string => assertType(is.urlString(value), AssertionTypeDescription.urlString, value),
truthy: (value: unknown): asserts value is unknown => assertType(is.truthy(value), AssertionTypeDescription.truthy, value),
falsy: (value: unknown): asserts value is unknown => assertType(is.falsy(value), AssertionTypeDescription.falsy, value),
@ -597,7 +568,7 @@ export const assert: Assert = {
typedArray: (value: unknown): asserts value is TypedArray => assertType(is.typedArray(value), AssertionTypeDescription.typedArray, value),
arrayLike: <T = unknown>(value: unknown): asserts value is ArrayLike<T> => assertType(is.arrayLike(value), AssertionTypeDescription.arrayLike, value),
domElement: (value: unknown): asserts value is Element => assertType(is.domElement(value), AssertionTypeDescription.domElement, value),
observable: (value: unknown): asserts value is ObservableLike => assertType(is.observable(value), TypeName.Observable, value),
observable: (value: unknown): asserts value is ObservableLike => assertType(is.observable(value), 'Observable', value),
nodeStream: (value: unknown): asserts value is NodeStream => assertType(is.nodeStream(value), AssertionTypeDescription.nodeStream, value),
infinite: (value: unknown): asserts value is number => assertType(is.infinite(value), AssertionTypeDescription.infinite, value),
emptyArray: (value: unknown): asserts value is never[] => assertType(is.emptyArray(value), AssertionTypeDescription.emptyArray, value),