51 lines
1.6 KiB
Diff
51 lines
1.6 KiB
Diff
diff --git a/node_modules/metro-runtime/src/polyfills/require.js b/node_modules/metro-runtime/src/polyfills/require.js
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index ce67cb4..eeeae84 100644
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--- a/node_modules/metro-runtime/src/polyfills/require.js
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+++ b/node_modules/metro-runtime/src/polyfills/require.js
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@@ -22,6 +22,13 @@ global.__c = clear;
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global.__registerSegment = registerSegment;
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var modules = clear();
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+if (__DEV__) {
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+ // Added by Dan for module init logging.
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+ global.__INIT_LOGS__ = []
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+ var initModuleCounter = 0
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+ var initModuleStack = []
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+}
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+
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// Don't use a Symbol here, it would pull in an extra polyfill with all sorts of
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// additional stuff (e.g. Array.from).
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const EMPTY = {};
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@@ -303,7 +310,30 @@ function loadModuleImplementation(moduleId, module) {
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throw module.error;
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}
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if (__DEV__) {
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- var Systrace = requireSystrace();
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+ // Added by Dan for module init logging.
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+ var Systrace = {
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+ beginEvent(label) {
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+ let fullLabel = initModuleCounter++ + ' ' + label
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+ global.__INIT_LOGS__.push(
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+ ' '.repeat(initModuleStack.length) +
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+ ' ENTER ' + fullLabel
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+ )
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+ initModuleStack.push({
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+ fullLabel,
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+ startTime: nativePerformanceNow(),
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+ })
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+ },
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+ endEvent() {
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+ const res = initModuleStack.pop()
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+ const fullLabel = res.fullLabel
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+ const startTime = res.startTime
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+ const timeElapsed = Math.round(nativePerformanceNow() - startTime)
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+ global.__INIT_LOGS__.push(
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+ ' '.repeat(initModuleStack.length) +
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+ ' LEAVE ' + fullLabel + ' [' + timeElapsed + 'ms]',
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+ )
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+ }
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+ };
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var Refresh = requireRefresh();
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}
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