80 lines
1.7 KiB
JavaScript
80 lines
1.7 KiB
JavaScript
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/** @typedef {"info" | "warning" | "error"} LogLevel */
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/** @type {LogLevel} */
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var logLevel = "info";
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function dummy() {}
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/**
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* @param {LogLevel} level log level
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* @returns {boolean} true, if should log
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*/
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function shouldLog(level) {
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var shouldLog =
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(logLevel === "info" && level === "info") ||
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(["info", "warning"].indexOf(logLevel) >= 0 && level === "warning") ||
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(["info", "warning", "error"].indexOf(logLevel) >= 0 && level === "error");
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return shouldLog;
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}
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/**
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* @param {(msg?: string) => void} logFn log function
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* @returns {(level: LogLevel, msg?: string) => void} function that logs when log level is sufficient
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*/
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function logGroup(logFn) {
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return function (level, msg) {
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if (shouldLog(level)) {
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logFn(msg);
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}
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};
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}
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/**
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* @param {LogLevel} level log level
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* @param {string|Error} msg message
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*/
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module.exports = function (level, msg) {
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if (shouldLog(level)) {
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if (level === "info") {
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console.log(msg);
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} else if (level === "warning") {
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console.warn(msg);
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} else if (level === "error") {
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console.error(msg);
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}
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}
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};
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var group = console.group || dummy;
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var groupCollapsed = console.groupCollapsed || dummy;
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var groupEnd = console.groupEnd || dummy;
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module.exports.group = logGroup(group);
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module.exports.groupCollapsed = logGroup(groupCollapsed);
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module.exports.groupEnd = logGroup(groupEnd);
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/**
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* @param {LogLevel} level log level
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*/
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module.exports.setLogLevel = function (level) {
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logLevel = level;
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};
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/**
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* @param {Error} err error
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* @returns {string} formatted error
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*/
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module.exports.formatError = function (err) {
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var message = err.message;
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var stack = err.stack;
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if (!stack) {
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return message;
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} else if (stack.indexOf(message) < 0) {
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return message + "\n" + stack;
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} else {
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return stack;
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}
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};
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