1.0.2 • Published 5 years ago
functrace v1.0.2
functrace
Function call tracer
Install
npm install functrace --save-dev
Usage example
const functrace = require("functrace");
const trace = functrace.makeTracer();
function add(a, b) {
return a + b;
}
const tracedAdd = trace(add);
tracedAdd(1, 2);
/* logs to console:
{ name: 'add',
args: [ 1, 2 ],
callCount: 1,
returnValue: 3,
duration: '42 μs' }
*/
/* It can also trace functions that return promises */
function addAsync(a, b) {
return new Promise(
(resolve) => setTimeout(() => resolve(a + b), 1000)
);
}
const tracedAddAsync = trace(addAsync);
tracedAddAsync(1, 2);
/* logs to console one second later:
{ name: 'addAsync',
args: [ 1, 2 ],
callCount: 1,
fulfillmentValue: 3,
duration: '1 s' }
*/
Test
npm test