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37c9db09c6
* Unvendor toml package * Fix many ESlint errors For mysterious reasons, these errors appear on my branch #1262 even though they are not related to changes there. The eslint config seems a bit unstable. Anyways this fixes them. * Put back Record * Fix typescript compilation * Fix lints * Try @iarna/toml instead * Fix import * Use @ltd/j-toml * Update test * Use toml-j0.4 * Some changes * Fix toml import * Try adding eslint gha job * Add forgotten checkout action * Force CI to run * Blah * Fix * Revert changes to github workflow * Fix lints * wget toml-j0.4 type definitions * Add toml-j types workaround to eslint workflow * Apply formatter * Use @hoodmane/toml-j0.4 * Import from @hoodmane/toml-j0.4
65 lines
1.8 KiB
TypeScript
65 lines
1.8 KiB
TypeScript
/* Very simple logger interface.
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Each module is expected to create its own logger by doing e.g.:
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const logger = getLogger('my-prefix');
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and then use it instead of console:
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logger.info('hello', 'world');
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logger.warn('...');
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logger.error('...');
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The logger automatically adds the prefix "[my-prefix]" to all logs.
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E.g., the above call would print:
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[my-prefix] hello world
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logger.log is intentionally omitted. The idea is that PyScript should not
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write anything to console.log, to leave it free for the user.
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Currently, the logger does not to anything more than that. In the future,
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we might want to add additional features such as the ability to
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enable/disable logs on a global or per-module basis.
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*/
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interface Logger {
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debug(message: string, ...args: unknown[]): void;
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info(message: string, ...args: unknown[]): void;
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warn(message: string, ...args: unknown[]): void;
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error(message: string | Error, ...args: unknown[]): void;
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}
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const _cache = new Map<string, Logger>();
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function getLogger(prefix: string): Logger {
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let logger = _cache.get(prefix);
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if (logger === undefined) {
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logger = _makeLogger(prefix);
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_cache.set(prefix, logger);
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}
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return logger;
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}
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function _makeLogger(prefix: string): Logger {
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prefix = `[${prefix}] `;
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function make(level: 'info' | 'debug' | 'warn' | 'error') {
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const out_fn = console[level].bind(console) as typeof console.log;
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function fn(fmt: string, ...args: unknown[]) {
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out_fn(prefix + fmt, ...args);
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}
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return fn;
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}
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// 'log' is intentionally omitted
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const debug = make('debug');
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const info = make('info');
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const warn = make('warn');
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const error = make('error');
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return { debug, info, warn, error };
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}
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export { getLogger };
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