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42 lines
1.1 KiB
42 lines
1.1 KiB
4 years ago
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'use strict'
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var dotenvExpand = function (config) {
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var interpolate = function (env) {
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var matches = env.match(/\$([a-zA-Z0-9_]+)|\${([a-zA-Z0-9_]+)}/g) || []
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matches.forEach(function (match) {
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var key = match.replace(/\$|{|}/g, '')
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// process.env value 'wins' over .env file's value
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var variable = process.env[key] || config.parsed[key] || ''
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// Resolve recursive interpolations
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variable = interpolate(variable)
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env = env.replace(match, variable)
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})
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return env
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}
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for (var configKey in config.parsed) {
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var value = process.env[configKey] || config.parsed[configKey]
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if (config.parsed[configKey].substring(0, 2) === '\\$') {
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config.parsed[configKey] = value.substring(1)
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} else if (config.parsed[configKey].indexOf('\\$') > 0) {
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config.parsed[configKey] = value.replace(/\\\$/g, '$')
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} else {
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config.parsed[configKey] = interpolate(value)
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}
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}
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for (var processKey in config.parsed) {
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process.env[processKey] = config.parsed[processKey]
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}
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return config
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}
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module.exports = dotenvExpand
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