@graphql-codegen/plugin-helpers
Version:
GraphQL Code Generator common utils and types
51 lines (50 loc) • 1.51 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.createProfiler = exports.createNoopProfiler = void 0;
function createNoopProfiler() {
return {
run(fn) {
return Promise.resolve().then(() => fn());
},
collect() {
return [];
},
};
}
exports.createNoopProfiler = createNoopProfiler;
function createProfiler() {
const events = [];
return {
collect() {
return events;
},
run(fn, name, cat) {
let startTime;
return Promise.resolve()
.then(() => {
startTime = process.hrtime();
})
.then(() => fn())
.then(value => {
const duration = process.hrtime(startTime);
// Trace Event Format documentation:
// https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/preview
const event = {
name,
cat,
ph: 'X',
ts: hrtimeToMicroseconds(startTime),
pid: 1,
tid: 0,
dur: hrtimeToMicroseconds(duration),
};
events.push(event);
return value;
});
},
};
}
exports.createProfiler = createProfiler;
function hrtimeToMicroseconds(hrtime) {
return (hrtime[0] * 1e9 + hrtime[1]) / 1000;
}