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'use strict';
import utils from '../utils.js';
import AxiosHeaders from "./AxiosHeaders.js";
const headersToObject = (thing) => thing instanceof AxiosHeaders ? thing.toJSON() : thing;
/**
* 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
*/
export default function mergeConfig(config1, config2) {
// eslint-disable-next-line no-param-reassign
config2 = config2 || {};
const config = {};
function getMergedValue(target, source, caseless) {
if (utils.isPlainObject(target) && utils.isPlainObject(source)) {
return utils.merge.call({caseless}, 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(a, b, caseless) {
if (!utils.isUndefined(b)) {
return getMergedValue(a, b, caseless);
} else if (!utils.isUndefined(a)) {
return getMergedValue(undefined, a, caseless);
}
}
// eslint-disable-next-line consistent-return
function valueFromConfig2(a, b) {
if (!utils.isUndefined(b)) {
return getMergedValue(undefined, b);
}
}
// eslint-disable-next-line consistent-return
function defaultToConfig2(a, b) {
if (!utils.isUndefined(b)) {
return getMergedValue(undefined, b);
} else if (!utils.isUndefined(a)) {
return getMergedValue(undefined, a);
}
}
// eslint-disable-next-line consistent-return
function mergeDirectKeys(a, b, prop) {
if (prop in config2) {
return getMergedValue(a, b);
} else if (prop in config1) {
return getMergedValue(undefined, a);
}
}
const 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,
beforeRedirect: defaultToConfig2,
transport: defaultToConfig2,
httpAgent: defaultToConfig2,
httpsAgent: defaultToConfig2,
cancelToken: defaultToConfig2,
socketPath: defaultToConfig2,
responseEncoding: defaultToConfig2,
validateStatus: mergeDirectKeys,
headers: (a, b) => mergeDeepProperties(headersToObject(a), headersToObject(b), true)
};
utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {
const merge = mergeMap[prop] || mergeDeepProperties;
const configValue = merge(config1[prop], config2[prop], prop);
(utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);
});
return config;
}
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