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                                                                                                                                                                                     ÿØÿà JFIF 

  
 
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                                                                                                                                                                                     "use strict";
const {
  asciiLowercase,
  solelyContainsHTTPTokenCodePoints,
  soleyContainsHTTPQuotedStringTokenCodePoints
} = require("./utils.js");

module.exports = class MIMETypeParameters {
  constructor(map) {
    this._map = map;
  }

  get size() {
    return this._map.size;
  }

  get(name) {
    name = asciiLowercase(String(name));
    return this._map.get(name);
  }

  has(name) {
    name = asciiLowercase(String(name));
    return this._map.has(name);
  }

  set(name, value) {
    name = asciiLowercase(String(name));
    value = String(value);

    if (!solelyContainsHTTPTokenCodePoints(name)) {
      throw new Error(`Invalid MIME type parameter name "${name}": only HTTP token code points are valid.`);
    }
    if (!soleyContainsHTTPQuotedStringTokenCodePoints(value)) {
      throw new Error(`Invalid MIME type parameter value "${value}": only HTTP quoted-string token code points are ` +
                      `valid.`);
    }

    return this._map.set(name, value);
  }

  clear() {
    this._map.clear();
  }

  delete(name) {
    name = asciiLowercase(String(name));
    return this._map.delete(name);
  }

  forEach(callbackFn, thisArg) {
    this._map.forEach(callbackFn, thisArg);
  }

  keys() {
    return this._map.keys();
  }

  values() {
    return this._map.values();
  }

  entries() {
    return this._map.entries();
  }

  [Symbol.iterator]() {
    return this._map[Symbol.iterator]();
  }
};