var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
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 __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/index.ts
var src_exports = {};
__export(src_exports, {
  contentLengthMiddleware: () => contentLengthMiddleware,
  contentLengthMiddlewareOptions: () => contentLengthMiddlewareOptions,
  getContentLengthPlugin: () => getContentLengthPlugin
});
module.exports = __toCommonJS(src_exports);
var import_protocol_http = require("@smithy/protocol-http");
var CONTENT_LENGTH_HEADER = "content-length";
function contentLengthMiddleware(bodyLengthChecker) {
  return (next) => async (args) => {
    const request = args.request;
    if (import_protocol_http.HttpRequest.isInstance(request)) {
      const { body, headers } = request;
      if (body && Object.keys(headers).map((str) => str.toLowerCase()).indexOf(CONTENT_LENGTH_HEADER) === -1) {
        try {
          const length = bodyLengthChecker(body);
          request.headers = {
            ...request.headers,
            [CONTENT_LENGTH_HEADER]: String(length)
          };
        } catch (error) {
        }
      }
    }
    return next({
      ...args,
      request
    });
  };
}
__name(contentLengthMiddleware, "contentLengthMiddleware");
var contentLengthMiddlewareOptions = {
  step: "build",
  tags: ["SET_CONTENT_LENGTH", "CONTENT_LENGTH"],
  name: "contentLengthMiddleware",
  override: true
};
var getContentLengthPlugin = /* @__PURE__ */ __name((options) => ({
  applyToStack: (clientStack) => {
    clientStack.add(contentLengthMiddleware(options.bodyLengthChecker), contentLengthMiddlewareOptions);
  }
}), "getContentLengthPlugin");
// Annotate the CommonJS export names for ESM import in node:

0 && (module.exports = {
  contentLengthMiddleware,
  contentLengthMiddlewareOptions,
  getContentLengthPlugin
});