38 lines
1.1 KiB
TypeScript
38 lines
1.1 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { noop } from 'lodash';
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import { LogFunction, LogLevel } from '../types/Logging';
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type LogAtLevelFnType = (
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level: LogLevel,
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...args: ReadonlyArray<unknown>
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) => void;
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let logAtLevel: LogAtLevelFnType = noop;
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let hasInitialized = false;
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export const fatal: LogFunction = (...args) =>
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logAtLevel(LogLevel.Fatal, ...args);
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export const error: LogFunction = (...args) =>
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logAtLevel(LogLevel.Error, ...args);
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export const warn: LogFunction = (...args) =>
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logAtLevel(LogLevel.Warn, ...args);
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export const info: LogFunction = (...args) =>
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logAtLevel(LogLevel.Info, ...args);
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export const debug: LogFunction = (...args) =>
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logAtLevel(LogLevel.Debug, ...args);
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export const trace: LogFunction = (...args) =>
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logAtLevel(LogLevel.Trace, ...args);
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/**
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* Sets the low-level logging interface. Should be called early in a process's life, and
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* can only be called once.
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*/
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export function setLogAtLevel(log: LogAtLevelFnType): void {
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if (hasInitialized) {
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throw new Error('Logger has already been initialized');
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}
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logAtLevel = log;
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hasInitialized = true;
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}
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