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- 'use strict';
- var utils = require('../utils');
- /**
- * Config-specific merge-function which creates a new config-object
- * by merging two configuration objects together.
- *
- * @param {Object} config1
- * @param {Object} config2
- * @returns {Object} New object resulting from merging config2 to config1
- */
- module.exports = function mergeConfig(config1, config2) {
- // eslint-disable-next-line no-param-reassign
- config2 = config2 || {};
- var config = {};
- function getMergedValue(target, source) {
- if (utils.isPlainObject(target) && utils.isPlainObject(source)) {
- return utils.merge(target, source);
- } else if (utils.isPlainObject(source)) {
- return utils.merge({}, source);
- } else if (utils.isArray(source)) {
- return source.slice();
- }
- return source;
- }
- // eslint-disable-next-line consistent-return
- function mergeDeepProperties(prop) {
- if (!utils.isUndefined(config2[prop])) {
- return getMergedValue(config1[prop], config2[prop]);
- } else if (!utils.isUndefined(config1[prop])) {
- return getMergedValue(undefined, config1[prop]);
- }
- }
- // eslint-disable-next-line consistent-return
- function valueFromConfig2(prop) {
- if (!utils.isUndefined(config2[prop])) {
- return getMergedValue(undefined, config2[prop]);
- }
- }
- // eslint-disable-next-line consistent-return
- function defaultToConfig2(prop) {
- if (!utils.isUndefined(config2[prop])) {
- return getMergedValue(undefined, config2[prop]);
- } else if (!utils.isUndefined(config1[prop])) {
- return getMergedValue(undefined, config1[prop]);
- }
- }
- // eslint-disable-next-line consistent-return
- function mergeDirectKeys(prop) {
- if (prop in config2) {
- return getMergedValue(config1[prop], config2[prop]);
- } else if (prop in config1) {
- return getMergedValue(undefined, config1[prop]);
- }
- }
- var mergeMap = {
- 'url': valueFromConfig2,
- 'method': valueFromConfig2,
- 'data': valueFromConfig2,
- 'baseURL': defaultToConfig2,
- 'transformRequest': defaultToConfig2,
- 'transformResponse': defaultToConfig2,
- 'paramsSerializer': defaultToConfig2,
- 'timeout': defaultToConfig2,
- 'timeoutMessage': defaultToConfig2,
- 'withCredentials': defaultToConfig2,
- 'adapter': defaultToConfig2,
- 'responseType': defaultToConfig2,
- 'xsrfCookieName': defaultToConfig2,
- 'xsrfHeaderName': defaultToConfig2,
- 'onUploadProgress': defaultToConfig2,
- 'onDownloadProgress': defaultToConfig2,
- 'decompress': defaultToConfig2,
- 'maxContentLength': defaultToConfig2,
- 'maxBodyLength': defaultToConfig2,
- 'transport': defaultToConfig2,
- 'httpAgent': defaultToConfig2,
- 'httpsAgent': defaultToConfig2,
- 'cancelToken': defaultToConfig2,
- 'socketPath': defaultToConfig2,
- 'responseEncoding': defaultToConfig2,
- 'validateStatus': mergeDirectKeys
- };
- utils.forEach(Object.keys(config1).concat(Object.keys(config2)), function computeConfigValue(prop) {
- var merge = mergeMap[prop] || mergeDeepProperties;
- var configValue = merge(prop);
- (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);
- });
- return config;
- };
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