44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
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module.exports = (opts, envKey) => {
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const
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fs = require('fs'),
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path = require('path'),
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json5 = require('json5'),
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{ convertCamelToUpperSnakeCase, readJsonIfExists } = require('./utils'),
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{ cwd, env } = process,
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def = readJsonIfExists(path.resolve(__dirname, 'defaults.json5')),
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// gets value from ENV || options || defaults (in that order)
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getVal = (envName) => {
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const snakeEnvName = `${envKey}_${convertCamelToUpperSnakeCase(envName)}`;
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if (env[snakeEnvName]) return env[snakeEnvName];
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if (opts[envName]) return opts[envName];
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return def[envName];
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},
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// gets array from ENV || options || defaults (in that order)
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getArray = (envName, optName = '') => {
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if (optName === '') {
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optName = envName;
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envName = convertCamelToUpperSnakeCase(envName);
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}
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envName = `${envKey}_${envName}`;
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if (env[envName]) return env[envName].split(path.delimiter);
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if (Array.isArray(opts[optName]) && opts[optName].length) return opts[optName];
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return def[optName];
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};
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return {
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...Object.keys(def).reduce((acc, curr) => {
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if (Array.isArray(def[curr])) acc[curr] = getArray(curr);
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else acc[curr] = getVal(curr);
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return acc;
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}, {}),
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};
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};
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