ethstorage-sdk/dist/node/file.cjs

eip-4844 blobs upload sdk

"use strict";
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/node/file.ts
var file_exports = {};
__export(file_exports, {
  NodeFile: () => NodeFile,
  assertArgument: () => assertArgument
});
module.exports = __toCommonJS(file_exports);
var import_fs = __toESM(require("fs"));
function assertArgument(check, message, name, value) {
  if (!check) {
    const error = new Error(message);
    error.code = "INVALID_ARGUMENT";
    error.argument = name;
    error.value = value;
    throw error;
  }
}
var NodeFile = class _NodeFile {
  isNodeJs;
  filePath;
  type;
  size;
  start;
  end;
  constructor(filePath, start = 0, end = 0, type = "") {
    this.isNodeJs = true;
    this.filePath = filePath;
    this.type = type;
    assertArgument(import_fs.default.existsSync(filePath), "invalid file path", "file", filePath);
    const stat = import_fs.default.statSync(filePath);
    this.start = Math.min(start, stat.size - 1);
    this.end = end == 0 ? stat.size : Math.min(end, stat.size);
    this.size = this.end - this.start;
    assertArgument(this.size > 0, "invalid file size", "file", this.size);
  }
  slice(start, end) {
    const newStart = this.start + start;
    const newEnd = newStart + (end - start);
    assertArgument(newStart < newEnd && newEnd <= this.end, "invalid slice range", "file", { start, end });
    return new _NodeFile(this.filePath, newStart, newEnd, this.type);
  }
  async arrayBuffer() {
    const start = this.start;
    const end = this.end;
    const length = end - start;
    const arrayBuffer = new ArrayBuffer(length);
    const uint8Array = new Uint8Array(arrayBuffer);
    const fd = import_fs.default.openSync(this.filePath, "r");
    import_fs.default.readSync(fd, uint8Array, 0, length, start);
    import_fs.default.closeSync(fd);
    return arrayBuffer;
  }
  async text() {
    const buffer = await this.arrayBuffer();
    return new TextDecoder().decode(buffer);
  }
  stream() {
    const start = this.start;
    const end = this.end;
    return import_fs.default.createReadStream(this.filePath, { start, end });
  }
};
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  NodeFile,
  assertArgument
});