Initial boiler plate project

node_modules/next/dist/trace/trace.js

@@ -0,0 +1,194 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    Span: null,
+    SpanStatus: null,
+    clearTraceEvents: null,
+    exportTraceState: null,
+    flushAllTraces: null,
+    getTraceEvents: null,
+    initializeTraceState: null,
+    recordTraceEvents: null,
+    trace: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    Span: function() {
+        return Span;
+    },
+    SpanStatus: function() {
+        return SpanStatus;
+    },
+    clearTraceEvents: function() {
+        return clearTraceEvents;
+    },
+    exportTraceState: function() {
+        return exportTraceState;
+    },
+    flushAllTraces: function() {
+        return flushAllTraces;
+    },
+    getTraceEvents: function() {
+        return getTraceEvents;
+    },
+    initializeTraceState: function() {
+        return initializeTraceState;
+    },
+    recordTraceEvents: function() {
+        return recordTraceEvents;
+    },
+    trace: function() {
+        return trace;
+    }
+});
+const _report = require("./report");
+const NUM_OF_MICROSEC_IN_NANOSEC = BigInt("1000");
+const NUM_OF_MILLISEC_IN_NANOSEC = BigInt("1000000");
+let count = 0;
+const getId = ()=>{
+    count++;
+    return count;
+};
+let defaultParentSpanId;
+let shouldSaveTraceEvents;
+let savedTraceEvents = [];
+var SpanStatus;
+(function(SpanStatus) {
+    SpanStatus["Started"] = "started";
+    SpanStatus["Stopped"] = "stopped";
+})(SpanStatus || (SpanStatus = {}));
+class Span {
+    constructor({ name, parentId, attrs, startTime }){
+        this.name = name;
+        this.parentId = parentId ?? defaultParentSpanId;
+        this.attrs = attrs ? {
+            ...attrs
+        } : {};
+        if (this.parentId === undefined) {
+            // Attach additional information to root spans
+            this.attrs.isTurbopack = Boolean(process.env.TURBOPACK);
+        }
+        this.status = "started";
+        this.id = getId();
+        this._start = startTime || process.hrtime.bigint();
+        // hrtime cannot be used to reconstruct tracing span's actual start time
+        // since it does not have relation to clock time:
+        // `These times are relative to an arbitrary time in the past, and not related to the time of day and therefore not subject to clock drift`
+        // https://nodejs.org/api/process.html#processhrtimetime
+        // Capturing current datetime as additional metadata for external reconstruction.
+        this.now = Date.now();
+    }
+    // Durations are reported as microseconds. This gives 1000x the precision
+    // of something like Date.now(), which reports in milliseconds.
+    // Additionally, ~285 years can be safely represented as microseconds as
+    // a float64 in both JSON and JavaScript.
+    stop(stopTime) {
+        if (this.status === "stopped") {
+            // Don't report the same span twice.
+            // TODO: In the future this should throw as `.stop()` shouldn't be called multiple times.
+            return;
+        }
+        const end = stopTime || process.hrtime.bigint();
+        const duration = (end - this._start) / NUM_OF_MICROSEC_IN_NANOSEC;
+        this.status = "stopped";
+        if (duration > Number.MAX_SAFE_INTEGER) {
+            throw new Error(`Duration is too long to express as float64: ${duration}`);
+        }
+        const timestamp = this._start / NUM_OF_MICROSEC_IN_NANOSEC;
+        const traceEvent = {
+            name: this.name,
+            duration: Number(duration),
+            timestamp: Number(timestamp),
+            id: this.id,
+            parentId: this.parentId,
+            tags: this.attrs,
+            startTime: this.now
+        };
+        _report.reporter.report(traceEvent);
+        if (shouldSaveTraceEvents) {
+            savedTraceEvents.push(traceEvent);
+        }
+    }
+    traceChild(name, attrs) {
+        return new Span({
+            name,
+            parentId: this.id,
+            attrs
+        });
+    }
+    manualTraceChild(name, // Start time in nanoseconds since epoch.
+    startTime, // Stop time in nanoseconds since epoch.
+    stopTime, attrs) {
+        // We need to convert the time info to the same base as hrtime since that is used usually.
+        const correction = process.hrtime.bigint() - BigInt(Date.now()) * NUM_OF_MILLISEC_IN_NANOSEC;
+        const span = new Span({
+            name,
+            parentId: this.id,
+            attrs,
+            startTime: startTime ? startTime + correction : process.hrtime.bigint()
+        });
+        span.stop(stopTime ? stopTime + correction : process.hrtime.bigint());
+    }
+    getId() {
+        return this.id;
+    }
+    setAttribute(key, value) {
+        this.attrs[key] = value;
+    }
+    traceFn(fn) {
+        try {
+            return fn(this);
+        } finally{
+            this.stop();
+        }
+    }
+    async traceAsyncFn(fn) {
+        try {
+            return await fn(this);
+        } finally{
+            this.stop();
+        }
+    }
+}
+const trace = (name, parentId, attrs)=>{
+    return new Span({
+        name,
+        parentId,
+        attrs
+    });
+};
+const flushAllTraces = ()=>_report.reporter.flushAll();
+const exportTraceState = ()=>({
+        defaultParentSpanId,
+        lastId: count,
+        shouldSaveTraceEvents
+    });
+const initializeTraceState = (state)=>{
+    count = state.lastId;
+    defaultParentSpanId = state.defaultParentSpanId;
+    shouldSaveTraceEvents = state.shouldSaveTraceEvents;
+};
+function getTraceEvents() {
+    return savedTraceEvents;
+}
+function recordTraceEvents(events) {
+    for (const traceEvent of events){
+        _report.reporter.report(traceEvent);
+        if (traceEvent.id > count) {
+            count = traceEvent.id + 1;
+        }
+    }
+    if (shouldSaveTraceEvents) {
+        savedTraceEvents.push(...events);
+    }
+}
+const clearTraceEvents = ()=>savedTraceEvents = [];
+
+//# sourceMappingURL=trace.js.map