50 lines
1.4 KiB
TypeScript
50 lines
1.4 KiB
TypeScript
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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// Many places rely on this enum being a string.
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export enum Environment {
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Development = 'development',
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Production = 'production',
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Staging = 'staging',
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Test = 'test',
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TestLib = 'test-lib',
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}
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let environment: undefined | Environment;
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export function getEnvironment(): Environment {
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if (environment === undefined) {
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// This should never happen—we should always have initialized the environment by this
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// point. It'd be nice to log here but the logger depends on the environment and we
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// can't have circular dependencies.
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return Environment.Production;
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}
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return environment;
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}
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/**
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* Sets the current environment. Should be called early in a process's life, and can only
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* be called once.
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*/
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export function setEnvironment(env: Environment): void {
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if (environment !== undefined) {
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throw new Error('Environment has already been set');
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}
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environment = env;
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}
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const ENVIRONMENTS_BY_STRING = new Map<string, Environment>([
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['development', Environment.Development],
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['production', Environment.Production],
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['staging', Environment.Staging],
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['test', Environment.Test],
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['test-lib', Environment.TestLib],
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]);
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export function parseEnvironment(value: unknown): Environment {
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if (typeof value !== 'string') {
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return Environment.Production;
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}
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const result = ENVIRONMENTS_BY_STRING.get(value);
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return result || Environment.Production;
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}
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