90 lines
2.9 KiB
JavaScript
90 lines
2.9 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getLogger = getLogger;
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exports.makeDebug = makeDebug;
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exports.setLogger = setLogger;
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exports.clearLoggers = clearLoggers;
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const debug_1 = __importDefault(require("debug"));
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const OCLIF_NS = 'oclif';
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function makeLogger(namespace = OCLIF_NS) {
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const debug = (0, debug_1.default)(namespace);
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return {
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child: (ns, delimiter) => makeLogger(`${namespace}${delimiter ?? ':'}${ns}`),
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debug,
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error: (formatter, ...args) => makeLogger(`${namespace}:error`).debug(formatter, ...args),
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info: debug,
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namespace,
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trace: debug,
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warn: debug,
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};
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}
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/**
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* Cache of logger instances. This is used to prevent creating multiple logger instances for the same namespace.
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*
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* The root logger is stored under the 'root' key as well as it's namespace.
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*/
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const cachedLoggers = new Map();
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/**
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* Returns a logger instance for the given namespace.
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* If a namespace is provided, a child logger is returned.
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* If no namespace is provided, the root logger is returned.
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*/
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function getLogger(namespace) {
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let rootLogger = cachedLoggers.get('root');
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if (!rootLogger) {
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set(makeLogger(OCLIF_NS));
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}
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rootLogger = cachedLoggers.get('root');
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if (namespace) {
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const cachedLogger = cachedLoggers.get(namespace);
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if (cachedLogger)
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return cachedLogger;
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const logger = rootLogger.child(namespace);
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cachedLoggers.set(namespace, logger);
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return logger;
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}
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return rootLogger;
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}
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function ensureItMatchesInterface(newLogger) {
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return (typeof newLogger.child === 'function' &&
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typeof newLogger.debug === 'function' &&
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typeof newLogger.error === 'function' &&
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typeof newLogger.info === 'function' &&
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typeof newLogger.trace === 'function' &&
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typeof newLogger.warn === 'function' &&
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typeof newLogger.namespace === 'string');
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}
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function set(newLogger) {
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if (cachedLoggers.has(newLogger.namespace))
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return;
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if (cachedLoggers.has('root'))
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return;
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if (ensureItMatchesInterface(newLogger)) {
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cachedLoggers.set(newLogger.namespace, newLogger);
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cachedLoggers.set('root', newLogger);
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}
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else {
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process.emitWarning('Logger does not match the Logger interface. Using default logger.');
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}
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}
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/**
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* Convenience function to create a debug function for a specific namespace
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*/
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function makeDebug(namespace) {
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return (formatter, ...args) => getLogger(namespace).debug(formatter, ...args);
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}
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function setLogger(loadOptions) {
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if (loadOptions && typeof loadOptions !== 'string' && 'logger' in loadOptions && loadOptions.logger) {
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set(loadOptions.logger);
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}
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else {
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set(makeLogger(OCLIF_NS));
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}
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}
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function clearLoggers() {
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cachedLoggers.clear();
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}
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