imgproxy/dist/base-builder.js

NodeJS client library to generate imgproxy urls

"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/base-builder.ts
var base_builder_exports = {};
__export(base_builder_exports, {
  BaseBuilder: () => BaseBuilder
});
module.exports = __toCommonJS(base_builder_exports);

// src/utils.ts
var import_crypto = __toESM(require("crypto"));
var isSecureConfig = (config) => {
  return "key" in config && "salt" in config;
};
var hexDecode = (hex) => Buffer.from(hex, "hex");
var encodeUrlChars = (url) => url.replace(/=/g, "").replace(/\+/g, "-").replace(/\//g, "_");
var urlSafeEncode = (data) => {
  if (Buffer.isBuffer(data)) {
    return encodeUrlChars(data.toString("base64"));
  }
  return encodeUrlChars(Buffer.from(data, "utf-8").toString("base64"));
};
var sign = (key, salt, target, size = 32) => {
  const hmac = import_crypto.default.createHmac("sha256", hexDecode(key));
  hmac.update(hexDecode(salt));
  hmac.update(target);
  return urlSafeEncode(hmac.digest().slice(0, size));
};

// src/base-builder.ts
var BaseBuilder = class {
  constructor(config) {
    this.config = config;
    this.config = config;
  }
  /**
   * Generates a URL based on the set options.
   *
   * @param uri The uri of the image
   * @param extension optional string to append as extension
   */
  generateUrl(uri, extension) {
    const options = this.serializeOptions();
    const config = this.config;
    const encode = config.encode !== false;
    uri = encode ? urlSafeEncode(uri) : `plain/${uri}`;
    uri = extension ? `${uri}${encode ? "." : "@"}${extension}` : uri;
    uri = `/${options ? `${options}/` : ""}${uri}`;
    const signature = isSecureConfig(config) ? sign(config.key, config.salt, uri, config.signatureSize || 32) : typeof config.insecure === "string" ? config.insecure : "insecure";
    const url = new URL(`${signature}${uri}`, config.baseUrl);
    return url.toString();
  }
};
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  BaseBuilder
});