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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {LOG_LEVEL} from './LogEnvironment';
/** Signature of a logging function */
export type LogFn = {
(message?: unknown, ...optionalParams: unknown[]): void;
};
/** Basic logger interface */
export interface Logger {
info: LogFn;
warn: LogFn;
error: LogFn;
debug: LogFn;
}
/** Log levels */
export type LogLevel = 'info' | 'warn' | 'error' | 'debug';
const NO_OP: LogFn = (_message?: unknown, ..._optionalParams: unknown[]) => {};
/** Logger which outputs to the browser console */
export class ConsoleLogger implements Logger {
readonly info: LogFn;
readonly warn: LogFn;
readonly error: LogFn;
readonly debug: LogFn;
constructor(options?: {level?: LogLevel}) {
const {level} = options || {};
// eslint-disable-next-line no-console
this.error = console.error.bind(console);
if (level === 'error') {
this.debug = NO_OP;
this.warn = NO_OP;
this.info = NO_OP;
return;
}
// eslint-disable-next-line no-console
this.warn = console.warn.bind(console);
if (level === 'warn') {
this.debug = NO_OP;
this.info = NO_OP;
return;
}
// eslint-disable-next-line no-console
this.info = console.log.bind(console);
if (level === 'info') {
this.debug = NO_OP;
return;
}
// eslint-disable-next-line no-console
this.debug = console.debug.bind(console);
}
}
export default new ConsoleLogger({level: LOG_LEVEL});
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