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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | 1x 1x 923x 923x 922x 922x 1x 922x 326x 2945x 8x 3279x 3279x 334x 2945x 3279x 554x 2725x 252x 3279x | import * as util from "util";
/**
* A simple logger. Supports info, and warn without any configuration
*
* Leverages [util.debuglog](https://nodejs.org/api/util.html#util_util_debuglog_section) to enable debug logging
* To use debug logging:
*
* ```
* export NODE_DEBUG=module-name,other-module
* ```
*
*/
export class Logger {
private logger: (msg: string, ...param: string[]) => void;
/**
* Initialize a logger
* @param modname Should always be the value module.id
*/
constructor(public modname: string) {
if (this.modname) {
this.modname = this.modname.split(/\//u).pop() || this.modname;
this.modname = this.modname.substring(
0,
this.modname.lastIndexOf(".")
);
} else {
throw new Error("You must initialize the logger with module.id");
}
this.logger = util.debuglog(this.modname);
}
public info(message: string, ...args: string[]) {
console.info(this.format(
"info",
message,
true,
args
));
}
public debug(message: string, ...args: string[]) {
this.logger(this.format(
"debug",
message,
false,
args
));
}
public warn(message: string, ...args: string[]) {
console.warn(this.format(
"warn",
message,
true,
args
));
}
private format(level: string, message: string, showName: boolean, args: string[]): string {
let formatString = "";
if (showName) {
formatString = util.format(
"%s %d: %s - [%s] - %s",
this.modname.toUpperCase(),
process.pid,
new Date().toISOString(),
level,
message
);
} else {
formatString = util.format(
"%s - [%s] - %s",
new Date().toISOString(),
level,
message
);
}
if ((/%s/gmu).test(formatString)) {
formatString = util.format(
formatString,
args
);
} else if ((/%j/gmu).test(formatString)) {
formatString = util.format(
formatString,
util.inspect(args)
);
}
return formatString;
}
}
|