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@alwatr/logger
Advanced tools
Fancy colorful console debugger with custom scope written in tiny TypeScript, ES module.
@alwatr/logger
Fancy colorful console debugger with custom scope written in tiny TypeScript, ES module.
import {createLogger} from 'https://esm.run/@alwatr/logger';
const logger = createLogger('demo');
function sayHello(name: string) {
logger.logMethodArgs('sayHello', {name});
}
Many of the methods in the logger are no-ops when the debug mode is off in the browser. Please remember to reload the window after changing the debug mode.
Debugging all scopes
window.localStorage?.setItem('ALWATR_DEBUG', '*');
Debugging specific scope
window.localStorage?.setItem('ALWATR_DEBUG', 'scope_name');
Debugging some scopes with pattern
window.localStorage?.setItem('ALWATR_DEBUG', '*alwatr*');
Make sure the log level in set correctly.
createLogger(scope: string, color: string, force = boolean)
Create a logger function for fancy console debug with custom scope.
ALWATR_DEBUG
item or process.env.ALWATR_DEBUG
Example:
import {createLogger} from 'https://esm.run/@alwatr/logger';
const logger = createLogger('logger/demo');
logger.debug: boolean
Debug state for current scope base on localStorage ALWATR_DEBUG
pattern.
logger.color: string
Debug state for current scope base on localStorage ALWATR_DEBUG
pattern.
logger.scope: string
Debug state for current scope base on localStorage ALWATR_DEBUG
pattern.
logger.logProperty(property, value)
console.debug
property change.
Example:
logger.logProperty('name', 'ali');
logger.logMethod(method)
console.debug
function or method calls.
Example:
function myMethod() {
logger.logMethod('myMethod');
}
logger.logMethodArgs(method, args)
console.debug
function or method calls with arguments.
Example:
function myMethod(a: number, b: number) {
logger.logMethodArgs('myMethod', {a, b});
}
logger.logMethodFull(method, args, result)
console.debug
function or method calls with arguments.
Example:
function add(a: number, b: number): number {
const result = a + b;
logger.logMethodFull('add', {a, b}, result);
return result;
}
logger.incident(method, code, description, ...args)
console.log
an event or expected accident. (not warn or error)
Example:
logger.incident('fetch', 'abort_signal', 'aborted signal received', {url: '/test.json'});
logger.accident(method, code, description, ...args)
console.warn
an unexpected accident or error that you handled.
Example:
logger.accident('fetch', 'file_not_found', 'url requested return 404 not found', {
url: '/test.json',
});
logger.error(method, code, errorStack, ...args)
console.error
an unexpected error.
Example:
try {
...
}
catch (err) {
logger.error('myMethod', 'error_code', (err as Error).stack || err, {a: 1, b: 2});
}
logger.logOther(...args)
Simple console.debug
with styled scope.
Example:
logger.logOther('foo:', 'bar', {a: 1});
For example with a promise function with error:
const failPromiseTest = (): Promise<never> => new Promise((_, reject) => reject(new Error('my_error_code')));
Best practices to catch the error and log it:
// Unhandled promise rejection (just log it)
failPromiseTest().catch((err) =>
logger.error('myMethod', (err as Error).message || 'error_code', (err as Error).stack || err)
);
// Handled promise rejection
try {
await failPromiseTest();
} catch (err) {
logger.accident(
'myMethod',
'error_code',
'failPromiseTest failed!, ' + (err as Error).message,
(err as Error).stack || err
);
// do something to handle the error...
}
FAQs
Fancy colorful console debugger with custom scope written in tiny TypeScript, ES module.
The npm package @alwatr/logger receives a total of 425 weekly downloads. As such, @alwatr/logger popularity was classified as not popular.
We found that @alwatr/logger demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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