86 lines
2.3 KiB
JavaScript
86 lines
2.3 KiB
JavaScript
![]() |
module.exports = RcLoader;
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var path = require('path');
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var _ = require('lodash');
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var RcFinder = require('rcfinder');
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function RcLoader(name, userConfig, finderConfig) {
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if (!(this instanceof RcLoader))
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return new RcLoader(name, userConfig, finderConfig);
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if (!name)
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throw new TypeError('Specify a name for your config files');
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finderConfig = _.isObject(finderConfig) ? finderConfig : {};
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var config = {};
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var configPending = false;
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var lookup = userConfig && userConfig.lookup !== void 0 ? !!userConfig.lookup : true;
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var finder = new RcFinder(name, finderConfig);
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if (typeof userConfig === 'string') {
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lookup = false;
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config.defaultFile = userConfig;
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} else {
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_.assign(config, userConfig || {});
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}
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var defaultFileGiven = (config.defaultFile !== undefined);
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if (defaultFileGiven) {
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if (finder.canLoadSync) {
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_.assign(config, finder.get(config.defaultFile));
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} else {
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// push callbacks here that need to wait for config to load
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configPending = [];
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// force the async loader
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finder.get(config.defaultFile, function (err, defaults) {
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if (err) throw err;
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_.assign(config, defaults);
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// clear the configPending queue
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var cbs = configPending;
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configPending = null;
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cbs.forEach(function (cb) { cb(); });
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});
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}
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}
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// these shouldn't be a part of the final config
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delete config.defaultFile;
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delete config.lookup;
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// get the config for a file
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this.for = function (filename, cb) {
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var sync = typeof cb !== 'function';
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function respond(err, configFile) {
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if (err && !sync) return cb(err);
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// the config has not loaded yet, delay our response
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// until it is
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if (!sync && configPending) {
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return configPending.push(function () {
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respond(err, configFile);
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});
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}
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configFile = configFile || {};
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if (defaultFileGiven) {
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configFile = _.merge(config, configFile);
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} else {
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configFile = _.merge(configFile, config);
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}
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if (sync) return configFile;
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cb(void 0, configFile);
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}
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if (!lookup) {
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if (sync) return respond();
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return process.nextTick(respond);
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}
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if (sync) return respond(null, finder.find(path.dirname(filename)));
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finder.find(path.dirname(filename), respond);
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};
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}
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