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authorlittleblack111 <littleblack11111@gmail.com>2023-11-05 17:16:09 +0800
committerlittleblack111 <littleblack11111@gmail.com>2023-11-05 17:16:09 +0800
commitd1d9f00b1bd660842addf5e6b1d1b64c852a9eea (patch)
tree60fb37ae73a1109d95301de5ec9b61b5726a4b61 /node_modules/chrome-trace-event/dist/trace-event.js
parent7c85166c4cbdd862fc4252007d2df5befcbc2a58 (diff)
added hover prefixer
Diffstat (limited to 'node_modules/chrome-trace-event/dist/trace-event.js')
-rw-r--r--node_modules/chrome-trace-event/dist/trace-event.js170
1 files changed, 170 insertions, 0 deletions
diff --git a/node_modules/chrome-trace-event/dist/trace-event.js b/node_modules/chrome-trace-event/dist/trace-event.js
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+++ b/node_modules/chrome-trace-event/dist/trace-event.js
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+"use strict";
+/**
+ * trace-event - A library to create a trace of your node app per
+ * Google's Trace Event format:
+ * // JSSTYLED
+ * https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Tracer = void 0;
+const stream_1 = require("stream");
+function evCommon() {
+ var hrtime = process.hrtime(); // [seconds, nanoseconds]
+ var ts = hrtime[0] * 1000000 + Math.round(hrtime[1] / 1000); // microseconds
+ return {
+ ts,
+ pid: process.pid,
+ tid: process.pid // no meaningful tid for node.js
+ };
+}
+class Tracer extends stream_1.Readable {
+ constructor(opts = {}) {
+ super();
+ this.noStream = false;
+ this.events = [];
+ if (typeof opts !== "object") {
+ throw new Error("Invalid options passed (must be an object)");
+ }
+ if (opts.parent != null && typeof opts.parent !== "object") {
+ throw new Error("Invalid option (parent) passed (must be an object)");
+ }
+ if (opts.fields != null && typeof opts.fields !== "object") {
+ throw new Error("Invalid option (fields) passed (must be an object)");
+ }
+ if (opts.objectMode != null &&
+ (opts.objectMode !== true && opts.objectMode !== false)) {
+ throw new Error("Invalid option (objectsMode) passed (must be a boolean)");
+ }
+ this.noStream = opts.noStream || false;
+ this.parent = opts.parent;
+ if (this.parent) {
+ this.fields = Object.assign({}, opts.parent && opts.parent.fields);
+ }
+ else {
+ this.fields = {};
+ }
+ if (opts.fields) {
+ Object.assign(this.fields, opts.fields);
+ }
+ if (!this.fields.cat) {
+ // trace-viewer *requires* `cat`, so let's have a fallback.
+ this.fields.cat = "default";
+ }
+ else if (Array.isArray(this.fields.cat)) {
+ this.fields.cat = this.fields.cat.join(",");
+ }
+ if (!this.fields.args) {
+ // trace-viewer *requires* `args`, so let's have a fallback.
+ this.fields.args = {};
+ }
+ if (this.parent) {
+ // TODO: Not calling Readable ctor here. Does that cause probs?
+ // Probably if trying to pipe from the child.
+ // Might want a serpate TracerChild class for these guys.
+ this._push = this.parent._push.bind(this.parent);
+ }
+ else {
+ this._objectMode = Boolean(opts.objectMode);
+ var streamOpts = { objectMode: this._objectMode };
+ if (this._objectMode) {
+ this._push = this.push;
+ }
+ else {
+ this._push = this._pushString;
+ streamOpts.encoding = "utf8";
+ }
+ stream_1.Readable.call(this, streamOpts);
+ }
+ }
+ /**
+ * If in no streamMode in order to flush out the trace
+ * you need to call flush.
+ */
+ flush() {
+ if (this.noStream === true) {
+ for (const evt of this.events) {
+ this._push(evt);
+ }
+ this._flush();
+ }
+ }
+ _read(_) { }
+ _pushString(ev) {
+ var separator = "";
+ if (!this.firstPush) {
+ this.push("[");
+ this.firstPush = true;
+ }
+ else {
+ separator = ",\n";
+ }
+ this.push(separator + JSON.stringify(ev), "utf8");
+ }
+ _flush() {
+ if (!this._objectMode) {
+ this.push("]");
+ }
+ }
+ child(fields) {
+ return new Tracer({
+ parent: this,
+ fields: fields
+ });
+ }
+ begin(fields) {
+ return this.mkEventFunc("b")(fields);
+ }
+ end(fields) {
+ return this.mkEventFunc("e")(fields);
+ }
+ completeEvent(fields) {
+ return this.mkEventFunc("X")(fields);
+ }
+ instantEvent(fields) {
+ return this.mkEventFunc("I")(fields);
+ }
+ mkEventFunc(ph) {
+ return (fields) => {
+ var ev = evCommon();
+ // Assign the event phase.
+ ev.ph = ph;
+ if (fields) {
+ if (typeof fields === "string") {
+ ev.name = fields;
+ }
+ else {
+ for (const k of Object.keys(fields)) {
+ if (k === "cat") {
+ ev.cat = fields.cat.join(",");
+ }
+ else {
+ ev[k] = fields[k];
+ }
+ }
+ }
+ }
+ if (!this.noStream) {
+ this._push(ev);
+ }
+ else {
+ this.events.push(ev);
+ }
+ };
+ }
+}
+exports.Tracer = Tracer;
+/*
+ * These correspond to the "Async events" in the Trace Events doc.
+ *
+ * Required fields:
+ * - name
+ * - id
+ *
+ * Optional fields:
+ * - cat (array)
+ * - args (object)
+ * - TODO: stack fields, other optional fields?
+ *
+ * Dev Note: We don't explicitly assert that correct fields are
+ * used for speed (premature optimization alert!).
+ */