opusdev/vector-similarity-api

1const TypedArrayPrototypeGetSymbolToStringTag = (() => {2  // Type check system lovingly referenced from:3  // https://github.com/nodejs/node/blob/7450332339ed40481f470df2a3014e2ec355d8d8/lib/internal/util/types.js#L13-L154  // eslint-disable-next-line @typescript-eslint/unbound-method -- the intention is to call this method with a bound value5  const g = Object.getOwnPropertyDescriptor(6    Object.getPrototypeOf(Uint8Array.prototype),7    Symbol.toStringTag8  )!.get!;9 10  return (value: unknown) => g.call(value);11})();12 13export function isUint8Array(value: unknown): value is Uint8Array {14  return TypedArrayPrototypeGetSymbolToStringTag(value) === 'Uint8Array';15}16 17export function isAnyArrayBuffer(value: unknown): value is ArrayBuffer {18  return (19    typeof value === 'object' &&20    value != null &&21    Symbol.toStringTag in value &&22    (value[Symbol.toStringTag] === 'ArrayBuffer' ||23      value[Symbol.toStringTag] === 'SharedArrayBuffer')24  );25}26 27export function isRegExp(regexp: unknown): regexp is RegExp {28  return regexp instanceof RegExp || Object.prototype.toString.call(regexp) === '[object RegExp]';29}30 31export function isMap(value: unknown): value is Map<unknown, unknown> {32  return (33    typeof value === 'object' &&34    value != null &&35    Symbol.toStringTag in value &&36    value[Symbol.toStringTag] === 'Map'37  );38}39 40export function isDate(date: unknown): date is Date {41  return date instanceof Date || Object.prototype.toString.call(date) === '[object Date]';42}43 44export type InspectFn = (x: unknown, options?: unknown) => string;45export function defaultInspect(x: unknown, _options?: unknown): string {46  return JSON.stringify(x, (k: string, v: unknown) => {47    if (typeof v === 'bigint') {48      return { $numberLong: `${v}` };49    } else if (isMap(v)) {50      return Object.fromEntries(v);51    }52    return v;53  });54}55 56/** @internal */57type StylizeFunction = (x: string, style: string) => string;58/** @internal */59export function getStylizeFunction(options?: unknown): StylizeFunction | undefined {60  const stylizeExists =61    options != null &&62    typeof options === 'object' &&63    'stylize' in options &&64    typeof options.stylize === 'function';65 66  if (stylizeExists) {67    return options.stylize as StylizeFunction;68  }69}70