nstdlib-nightly/lib/internal/file.mjs

Node.js standard library converted to runtime-agnostic ES modules.

// Source: https://github.com/nodejs/node/blob/65eff1eb/lib/internal/file.js

import { Blob } from "nstdlib/lib/internal/blob";
import {
  customInspectSymbol as kInspect,
  kEnumerableProperty,
  kEmptyObject,
} from "nstdlib/lib/internal/util";
import { codes as __codes__ } from "nstdlib/lib/internal/errors";
import { inspect } from "nstdlib/lib/internal/util/inspect";

const { ERR_MISSING_ARGS } = __codes__;

class File extends Blob {
  /** @type {string} */
  #name;

  /** @type {number} */
  #lastModified;

  constructor(fileBits, fileName, options = kEmptyObject) {
    if (arguments.length < 2) {
      throw new ERR_MISSING_ARGS("fileBits", "fileName");
    }

    super(fileBits, options);

    let { lastModified } = options ?? kEmptyObject;

    if (lastModified !== undefined) {
      // Using Number(...) will not throw an error for bigints.
      lastModified = +lastModified;

      if (Number.isNaN(lastModified)) {
        lastModified = 0;
      }
    } else {
      lastModified = Date.now();
    }

    this.#name = String.prototype.toWellFormed.call(`${fileName}`);
    this.#lastModified = lastModified;
  }

  get name() {
    return this.#name;
  }

  get lastModified() {
    return this.#lastModified;
  }

  [kInspect](depth, options) {
    if (depth < 0) {
      return this;
    }

    const opts = {
      ...options,
      depth: options.depth == null ? null : options.depth - 1,
    };

    return `File ${inspect(
      {
        size: this.size,
        type: this.type,
        name: this.#name,
        lastModified: this.#lastModified,
      },
      opts,
    )}`;
  }
}

Object.defineProperties(File.prototype, {
  name: kEnumerableProperty,
  lastModified: kEnumerableProperty,
  [Symbol.toStringTag]: {
    __proto__: null,
    configurable: true,
    value: "File",
  },
});

export { File };