| 1 | /* global process */
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| 2 | /** @module io */
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| 3 |
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| 4 | const { fnOrValue } = require('../logic');
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| 5 | /** Returns and parses an environment var and if does not exists returns the default value
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| 6 | * @argument {String} key key to get from our environment variables
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| 7 | * @argument {*} defaultValue default value to be returned if key not found
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| 8 | * @argument {Function} postProcessor process the value once getted.
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| 9 | * @argument {Object} env io source to read environment vars from
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| 10 | * @returns {*}
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| 11 | * @method
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| 12 | */
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| 13 | const envOr = (key, defaultValue, postProcessor = x => x, { env } = process) => postProcessor(typeof key === 'string' && env && env[key.toUpperCase()]) || fnOrValue(defaultValue, key);
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| 14 |
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| 15 | module.exports = { envOr };
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