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bc20498 |
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/* global ENV_PREFIX */
const expected = new Set([
'SOCKET_PATH',
'HOST',
'PORT',
'ORIGIN',
'XFF_DEPTH',
'ADDRESS_HEADER',
'PROTOCOL_HEADER',
'HOST_HEADER',
'PORT_HEADER',
'BODY_SIZE_LIMIT'
]);
if (ENV_PREFIX) {
for (const name in process.env) {
if (name.startsWith(ENV_PREFIX)) {
const unprefixed = name.slice(ENV_PREFIX.length);
if (!expected.has(unprefixed)) {
throw new Error(
`You should change envPrefix (${ENV_PREFIX}) to avoid conflicts with existing environment variables — unexpectedly saw ${name}`
);
}
}
}
}
/**
* @param {string} name
* @param {any} fallback
*/
function env(name, fallback) {
const prefixed = ENV_PREFIX + name;
return prefixed in process.env ? process.env[prefixed] : fallback;
}
export { env };
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