reactive-box - npm Package Compare versions

Comparing version 0.1.7 to 0.2.0

package.json

 {
   "name": "reactive-box",
-  "version": "0.1.7",
+  "version": "0.2.0",
   "description": "Minimalistic, fast, and highly efficient reactivity",
@@ -47,3 +47,3 @@ "scripts": {
   "homepage": "https://github.com/betula/reactive-box#readme",
-  "gitHead": "0f115d5d63ce4be2d932f2ef57a4b24aefda0d3c"
+  "gitHead": "fb575f497551405fc044780b73f21c787656f8ed"
 }

src/main.js

@@ -5,2 +5,3 @@ /**
  * 2: (valid for sel)
+ * 3: (recalc for sel)
  */
@@ -28,5 +29,5 @@ let context_node;
   else {
-    const syncs = new Set();
+    const exprs = new Set();
+    const sels = new Set();
     let limit = 10000;
-    let next_bound = new Set();
 
@@ -37,19 +38,25 @@ active_bound = new Set(box_node[0]);
         active_bound.forEach((node) => {
-          if (node.length === 2) syncs.add(node[0]);
+          if (node.length === 2) exprs.add(node);
           else {
-            node[2] = 0; // sel invalidate
-            node[0].forEach((next_node) => next_bound.add(next_node));
-            free(node, 0);
+            if (node[0].size) sels.add(node);
+            else node[2] = 0;
           }
           free(node, 1);
         });
-        [active_bound, next_bound] = [next_bound, active_bound];
-        next_bound.clear();
+        active_bound.clear();
 
+        sels.forEach((sel_node) => {
+          if (sel_node[3]()) {
+            sel_node[0].forEach((rel) => active_bound.add(rel));
+            free(sel_node, 0);
+          }
+        });
+        sels.clear();
+
         if (!active_bound.size) {
-          const iter = syncs.values();
-          let sync;
-          while ((sync = iter.next().value)) {
-            sync();
-            syncs.delete(sync);
+          const iter = exprs.values();
+          let expr_node;
+          while ((expr_node = iter.next().value)) {
+            expr_node[0]();
+            exprs.delete(expr_node);
             if (active_bound.size) break;
@@ -81,4 +88,6 @@ }
       : (next_value) => {
-          Object.is(value, next_value) ||
-            ((value = next_value), write(box_node));
+          if (!Object.is(value, next_value)) {
+            value = next_value;
+            write(box_node);
+          }
         },
@@ -89,7 +98,20 @@ ];
 const sel = (body) => {
-  const sel_node = [new Set(), new Set(), 0];
   let cache;
+  let last_context;
+  const recalc = () => {
+    let prev = cache;
+    const stack = context_node;
+    context_node = sel_node;
+    try {
+      cache = body.call(last_context);
+    } finally {
+      context_node = stack;
+    }
+    return !Object.is(prev, cache);
+  };
+  const sel_node = [new Set(), new Set(), 0, recalc];
   return [
     function () {
       read(sel_node);
+      last_context = this;
       if (!sel_node[2]) {
@@ -99,3 +121,3 @@ const stack = context_node;
         try {
-          cache = body.call(this);
+          cache = body.call(last_context);
         } finally {
@@ -112,2 +134,3 @@ context_node = stack;
       sel_node[2] = cache = 0;
+      last_context = null;
     },
@@ -118,3 +141,5 @@ ];
 const expr = (body, sync) => {
-  const expr_node = [sync || run, new Set()];
+  let last_context;
+  if (!sync) sync = () => run.call(last_context);
+  const expr_node = [sync, new Set()];
   function run() {
@@ -127,3 +152,3 @@ let result;
     try {
-      result = body.apply(this, arguments);
+      result = body.apply((last_context = this), arguments);
     } finally {
@@ -134,5 +159,11 @@ context_node = stack;
   }
-  return [run, () => free(expr_node, 1)];
+  return [
+    run,
+    () => {
+      free(expr_node, 1);
+      last_context = null;
+    },
+  ];
 };
 
 module.exports = { box, sel, expr };

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Improved metrics

Total package byte prevSize

8723

increased by7.65%

Lines of code

158

increased by23.44%

No dependency changes