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