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Split TypeNames and Types into different lists

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This commit is contained in:
Bjorn Stromberg 2020-06-06 16:52:10 +09:00
parent 6824f1446d
commit dc348a0e49
1 changed files with 50 additions and 30 deletions
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80
source/index.ts
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@ -31,42 +31,62 @@ const objectTypeNames = [
type ObjectTypeName = typeof objectTypeNames[number]; type ObjectTypeName = typeof objectTypeNames[number];
const primitives = { const primitiveTypeNames = [
null: null, 'null',
undefined, 'undefined',
string: String(), 'string',
number: Number(), 'number',
bigint: BigInt(0), 'bigint',
boolean: Boolean(), 'boolean',
symbol: Symbol('') 'symbol'
} as const; ] as const;
type PrimitiveTypeName = keyof typeof primitives; export type Primitive =
export type Primitive = typeof primitives[PrimitiveTypeName]; | null
| undefined
| string
| number
| bigint
| boolean
| symbol;
function isPrimitiveTypeName(name: string): name is PrimitiveTypeName { type PrimitiveTypeName = typeof primitiveTypeNames[number];
return Object.prototype.hasOwnProperty.call(primitives, name);
function isPrimitiveTypeName(name: any): name is PrimitiveTypeName {
return primitiveTypeNames.includes(name);
} }
const typedArrays = { const typedArrayTypeNames = [
Int8Array: new Int8Array(), 'Int8Array',
Uint8Array: new Uint8Array(), 'Uint8Array',
Uint8ClampedArray: new Uint8ClampedArray(), 'Uint8ClampedArray',
Int16Array: new Int16Array(), 'Int16Array',
Uint16Array: new Uint16Array(), 'Uint16Array',
Int32Array: new Int32Array(), 'Int32Array',
Uint32Array: new Uint32Array(), 'Uint32Array',
Float32Array: new Float32Array(), 'Float32Array',
Float64Array: new Float64Array(), 'Float64Array',
BigInt64Array: new BigInt64Array(), 'BigInt64Array',
BigUint64Array: new BigUint64Array() 'BigUint64Array'
} as const; ] as const;
type TypedArrayTypeName = keyof typeof typedArrays; export type TypedArray =
export type TypedArray = typeof typedArrays[TypedArrayTypeName]; | Int8Array
| Uint8Array
| Uint8ClampedArray
| Int16Array
| Uint16Array
| Int32Array
| Uint32Array
| Float32Array
| Float64Array
| BigInt64Array
| BigUint64Array;
function isTypedArrayName(value: any): value is TypedArrayTypeName { type TypedArrayTypeName = typeof typedArrayTypeNames[number];
return Object.prototype.hasOwnProperty.call(typedArrays, value);
function isTypedArrayName(name: any): name is TypedArrayTypeName {
return typedArrayTypeNames.includes(name);
} }
export type TypeName = ObjectTypeName | PrimitiveTypeName | TypedArrayTypeName; export type TypeName = ObjectTypeName | PrimitiveTypeName | TypedArrayTypeName;