Initial boiler plate project

node_modules/next/dist/lib/memory/trace.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    getAllMemoryUsageSpans: null,
+    startPeriodicMemoryUsageTracing: null,
+    stopPeriodicMemoryUsageTracing: null,
+    traceMemoryUsage: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    getAllMemoryUsageSpans: function() {
+        return getAllMemoryUsageSpans;
+    },
+    startPeriodicMemoryUsageTracing: function() {
+        return startPeriodicMemoryUsageTracing;
+    },
+    stopPeriodicMemoryUsageTracing: function() {
+        return stopPeriodicMemoryUsageTracing;
+    },
+    traceMemoryUsage: function() {
+        return traceMemoryUsage;
+    }
+});
+const _v8 = /*#__PURE__*/ _interop_require_default(require("v8"));
+const _log = require("../../build/output/log");
+const _trace = require("../../trace");
+const _picocolors = require("../picocolors");
+const _path = require("path");
+const _shared = require("../../trace/shared");
+function _interop_require_default(obj) {
+    return obj && obj.__esModule ? obj : {
+        default: obj
+    };
+}
+const HEAP_SNAPSHOT_THRESHOLD_PERCENT = 70;
+let alreadyGeneratedHeapSnapshot = false;
+const TRACE_MEMORY_USAGE_TIMER_MS = 20000;
+let traceMemoryUsageTimer;
+const allMemoryUsage = [];
+function startPeriodicMemoryUsageTracing() {
+    traceMemoryUsageTimer = setTimeout(()=>{
+        traceMemoryUsage("periodic memory snapshot");
+        startPeriodicMemoryUsageTracing();
+    }, TRACE_MEMORY_USAGE_TIMER_MS);
+}
+function stopPeriodicMemoryUsageTracing() {
+    if (traceMemoryUsageTimer) {
+        clearTimeout(traceMemoryUsageTimer);
+    }
+}
+function getAllMemoryUsageSpans() {
+    return allMemoryUsage;
+}
+function traceMemoryUsage(description, parentSpan) {
+    const memoryUsage = process.memoryUsage();
+    const v8HeapStatistics = _v8.default.getHeapStatistics();
+    const heapUsed = v8HeapStatistics.used_heap_size;
+    const heapMax = v8HeapStatistics.heap_size_limit;
+    const tracedMemoryUsage = {
+        "memory.rss": memoryUsage.rss,
+        "memory.heapUsed": heapUsed,
+        "memory.heapTotal": memoryUsage.heapTotal,
+        "memory.heapMax": heapMax
+    };
+    allMemoryUsage.push(tracedMemoryUsage);
+    const tracedMemoryUsageAsStrings = Object.fromEntries(Object.entries(tracedMemoryUsage).map(([key, value])=>[
+            key,
+            String(value)
+        ]));
+    if (parentSpan) {
+        parentSpan.traceChild("memory-usage", tracedMemoryUsageAsStrings);
+    } else {
+        (0, _trace.trace)("memory-usage", undefined, tracedMemoryUsageAsStrings);
+    }
+    if (process.env.EXPERIMENTAL_DEBUG_MEMORY_USAGE) {
+        const percentageHeapUsed = 100 * heapUsed / heapMax;
+        (0, _log.info)("");
+        (0, _log.info)("***************************************");
+        (0, _log.info)(`Memory usage report at "${description}":`);
+        (0, _log.info)(` - RSS: ${(memoryUsage.rss / 1024 / 1024).toFixed(2)} MB`);
+        (0, _log.info)(` - Heap Used: ${(heapUsed / 1024 / 1024).toFixed(2)} MB`);
+        (0, _log.info)(` - Heap Total Allocated: ${(memoryUsage.heapTotal / 1024 / 1024).toFixed(2)} MB`);
+        (0, _log.info)(` - Heap Max: ${(heapMax / 1024 / 1024).toFixed(2)} MB`);
+        (0, _log.info)(` - Percentage Heap Used: ${percentageHeapUsed.toFixed(2)}%`);
+        (0, _log.info)("***************************************");
+        (0, _log.info)("");
+        if (percentageHeapUsed > HEAP_SNAPSHOT_THRESHOLD_PERCENT) {
+            const distDir = _shared.traceGlobals.get("distDir");
+            const heapFilename = (0, _path.join)(distDir, `${description.replace(" ", "-")}.heapsnapshot`);
+            (0, _log.warn)((0, _picocolors.bold)(`Heap usage is close to the limit. ${percentageHeapUsed.toFixed(2)}% of heap has been used.`));
+            if (!alreadyGeneratedHeapSnapshot) {
+                (0, _log.warn)((0, _picocolors.bold)(`Saving heap snapshot to ${heapFilename}.  ${(0, _picocolors.italic)("Note: this will take some time.")}`));
+                _v8.default.writeHeapSnapshot(heapFilename);
+                alreadyGeneratedHeapSnapshot = true;
+            } else {
+                (0, _log.warn)("Skipping heap snapshot generation since heap snapshot has already been generated.");
+            }
+        }
+    }
+}
+
+//# sourceMappingURL=trace.js.map