60 lines
1.7 KiB
JavaScript
60 lines
1.7 KiB
JavaScript
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import { accessSync, writeFileSync, createWriteStream, mkdirSync } from 'node:fs';
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import { dirname as directoryname } from 'node:path';
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export class FileLogger {
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#filename;
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#dirname;
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writableStream;
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constructor(filename) {
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this.#dirname = directoryname(filename);
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this.#filename = filename;
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this.#_stat();
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this.#_createWritableStream();
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this.#_endStream();
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}
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#fsAccess(filename, mode) {
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try {
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accessSync(filename, mode);
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return true;
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}
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catch (error) {
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return false;
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}
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}
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#_stat() {
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//check if file exists
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if (!this.#fsAccess(this.#filename)) {
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// check if directory exists
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if (!this.#fsAccess(this.#dirname)) {
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// create the directory
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mkdirSync(this.#dirname, { recursive: true });
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}
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// create the file and write an empty string to it
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writeFileSync(this.#filename, '');
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return;
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}
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}
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#_createWritableStream() {
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this.writableStream = createWriteStream(this.#filename, { flags: 'a' });
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}
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toFile(stringToLog) {
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this.writableStream.write(stringToLog + '\n');
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}
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#_endStream() {
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process.on('exit', () => {
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this.writableStream.close();
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});
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process.on('SIGTERM', () => {
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this.writableStream.close();
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process.exit(0);
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});
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process.on('SIGINT', () => {
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this.writableStream.close();
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process.exit(0);
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});
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process.on('uncaughtException', () => {
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this.writableStream.close();
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process.exit(1);
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});
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}
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}
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