add comments, minor tweak

packages/svelte/src/internal/client/constants.js

@@ -22,8 +22,12 @@ export const HEAD_EFFECT = 1 << 19;
 export const EFFECT_HAS_DERIVED = 1 << 20;
 export const EFFECT_IS_UPDATING = 1 << 21;
 
+// `$inspect.trace` proxy path flags
+/** Keep path the same */
 export const PROXY_PRESERVE_PATH = 1 << 1;
+/** Change proxy path to new "owner" */
 export const PROXY_CHANGE_PATH = 1 << 2;
+/** "Unown" proxy, so its path becomes `[$state proxy]` */
 export const PROXY_REMOVE_PATH = 1 << 3;
 
 export const STATE_SYMBOL = Symbol('$state');

packages/svelte/src/internal/client/dev/tracing.js

@@ -95,9 +95,11 @@ export function trace(label, fn) {
 	var previously_tracing_expressions = tracing_expressions;
 	try {
 		tracing_expressions = { entries: new Map(), reaction: active_reaction };
+
 		var start = performance.now();
 		var value = fn();
 		var time = (performance.now() - start).toFixed(2);
+
 		if (!effect_tracking()) {
 			// eslint-disable-next-line no-console
 			console.log(`${label()} %cran outside of an effect (${time}ms)`, 'color: grey');