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