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87 lines
2.8 KiB
87 lines
2.8 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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var valueFromConfig2Keys = ['url', 'method', 'data'];
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var mergeDeepPropertiesKeys = ['headers', 'auth', 'proxy', 'params'];
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var defaultToConfig2Keys = [
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'baseURL', 'transformRequest', 'transformResponse', 'paramsSerializer',
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'timeout', 'timeoutMessage', 'withCredentials', 'adapter', 'responseType', 'xsrfCookieName',
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'xsrfHeaderName', 'onUploadProgress', 'onDownloadProgress', 'decompress',
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'maxContentLength', 'maxBodyLength', 'maxRedirects', 'transport', 'httpAgent',
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'httpsAgent', 'cancelToken', 'socketPath', 'responseEncoding'
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];
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var directMergeKeys = ['validateStatus'];
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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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function mergeDeepProperties(prop) {
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if (!utils.isUndefined(config2[prop])) {
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config[prop] = getMergedValue(config1[prop], config2[prop]);
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} else if (!utils.isUndefined(config1[prop])) {
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config[prop] = getMergedValue(undefined, config1[prop]);
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}
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}
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utils.forEach(valueFromConfig2Keys, function valueFromConfig2(prop) {
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if (!utils.isUndefined(config2[prop])) {
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config[prop] = getMergedValue(undefined, config2[prop]);
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}
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});
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utils.forEach(mergeDeepPropertiesKeys, mergeDeepProperties);
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utils.forEach(defaultToConfig2Keys, function defaultToConfig2(prop) {
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if (!utils.isUndefined(config2[prop])) {
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config[prop] = getMergedValue(undefined, config2[prop]);
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} else if (!utils.isUndefined(config1[prop])) {
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config[prop] = getMergedValue(undefined, config1[prop]);
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}
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});
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utils.forEach(directMergeKeys, function merge(prop) {
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if (prop in config2) {
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config[prop] = getMergedValue(config1[prop], config2[prop]);
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} else if (prop in config1) {
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config[prop] = getMergedValue(undefined, config1[prop]);
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}
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});
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var axiosKeys = valueFromConfig2Keys
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.concat(mergeDeepPropertiesKeys)
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.concat(defaultToConfig2Keys)
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.concat(directMergeKeys);
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var otherKeys = Object
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.keys(config1)
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.concat(Object.keys(config2))
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.filter(function filterAxiosKeys(key) {
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return axiosKeys.indexOf(key) === -1;
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});
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utils.forEach(otherKeys, mergeDeepProperties);
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return config;
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};
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