@iimm/shared/dist/esm/file/fileConvert/index.js

shared utils on browser and react env

/** File转Base64 */
export var fileToBase64 = function fileToBase64(file) {
  return new Promise(function (resolve, reject) {
    var reader = new FileReader();
    reader.readAsDataURL(file);
    reader.onload = function () {
      resolve(reader.result);
    };
    reader.onerror = function (e) {
      reject(e);
    };
  });
};
export var fileToArrayBuffer = function fileToArrayBuffer(file) {
  return new Promise(function (resolve, reject) {
    var reader = new FileReader();
    reader.readAsArrayBuffer(file);
    reader.onload = function () {
      resolve(reader.result);
    };
    reader.onerror = function () {
      reject(reader.error);
    };
  });
};

/** 件读取为二进制字符串 */
export var fileToBinaryString = function fileToBinaryString(file) {
  return new Promise(function (resolve) {
    var reader = new FileReader();
    reader.readAsBinaryString(file);
    reader.onload = function () {
      resolve(reader.result);
    };
    reader.onerror = function () {
      resolve('');
    };
  });
};

/** 文件读取为Text */
export var fileToText = function fileToText(file) {
  var encoding = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'utf-8';
  return new Promise(function (resolve) {
    var reader = new FileReader();
    reader.readAsText(file, encoding);
    reader.onload = function () {
      resolve(reader.result);
    };
    reader.onerror = function () {
      resolve('');
    };
  });
};