multipasta - npm Package Compare versions

Comparing version 0.2.1 to 0.2.2

dist/cjs/internal/search.js

@@ -7,2 +7,20 @@ "use strict";
 exports.make = make;
+function makeMatcher(needle, needleFirstVariationIndex) {
+  const needleIndexes = [];
+  const needleChars = [];
+  for (let i = 0; i < needle.length; i++) {
+    if (i === 0 || i === needleFirstVariationIndex) continue;
+    needleIndexes.push(i);
+    needleChars.push(needle[i]);
+  }
+  const needleIndexesLen = needleIndexes.length;
+  return function exactMatch(chunk, start) {
+    for (let i = 0; i < needleIndexesLen; i++) {
+      if (chunk[start + needleIndexes[i]] !== needleChars[i]) {
+        return false;
+      }
+    }
+    return true;
+  };
+}
 function noopMatch(_, __) {
@@ -22,3 +40,3 @@ return false;
   const needleFirstVariation = needle[needleFirstVariationIndex];
-  const exactMatch = "Buffer" in globalThis ? noopMatch : new Function("chunk", "start", "return " + [...needle].filter((_, i) => i !== 0 || i !== needleFirstVariationIndex).map((b, i) => `chunk[start + ${i}] === ${b}`).join(" && "));
+  const exactMatch = typeof Buffer === "function" ? noopMatch : makeMatcher(needle, needleFirstVariationIndex);
   return {
@@ -25,0 +43,0 @@ needle,

dist/esm/internal/search.js

@@ -0,1 +1,19 @@
+function makeMatcher(needle, needleFirstVariationIndex) {
+  const needleIndexes = [];
+  const needleChars = [];
+  for (let i = 0; i < needle.length; i++) {
+    if (i === 0 || i === needleFirstVariationIndex) continue;
+    needleIndexes.push(i);
+    needleChars.push(needle[i]);
+  }
+  const needleIndexesLen = needleIndexes.length;
+  return function exactMatch(chunk, start) {
+    for (let i = 0; i < needleIndexesLen; i++) {
+      if (chunk[start + needleIndexes[i]] !== needleChars[i]) {
+        return false;
+      }
+    }
+    return true;
+  };
+}
 function noopMatch(_, __) {
@@ -15,3 +33,3 @@ return false;
   const needleFirstVariation = needle[needleFirstVariationIndex];
-  const exactMatch = "Buffer" in globalThis ? noopMatch : new Function("chunk", "start", "return " + [...needle].filter((_, i) => i !== 0 || i !== needleFirstVariationIndex).map((b, i) => `chunk[start + ${i}] === ${b}`).join(" && "));
+  const exactMatch = typeof Buffer === "function" ? noopMatch : makeMatcher(needle, needleFirstVariationIndex);
   return {
@@ -18,0 +36,0 @@ needle,

package.json

 {
   "name": "multipasta",
-  "version": "0.2.1",
+  "version": "0.2.2",
   "description": "",
@@ -5,0 +5,0 @@ "license": "MIT",

src/internal/search.ts

@@ -15,2 +15,21 @@ interface SearchState {
 
+function makeMatcher(needle: Uint8Array, needleFirstVariationIndex: number) {
+  const needleIndexes: Array<number> = []
+  const needleChars: Array<number> = []
+  for (let i = 0; i < needle.length; i++) {
+    if (i === 0 || i === needleFirstVariationIndex) continue
+    needleIndexes.push(i)
+    needleChars.push(needle[i])
+  }
+  const needleIndexesLen = needleIndexes.length
+  return function exactMatch(chunk: Uint8Array, start: number): boolean {
+    for (let i = 0; i < needleIndexesLen; i++) {
+      if (chunk[start + needleIndexes[i]] !== needleChars[i]) {
+        return false
+      }
+    }
+    return true
+  }
+}
+
 function noopMatch(_: Uint8Array, __: number): boolean {
@@ -35,13 +54,5 @@ return false
   const exactMatch =
-    "Buffer" in globalThis
+    typeof Buffer === "function"
       ? noopMatch
-      : (new Function(
-          "chunk",
-          "start",
-          "return " +
-            [...needle]
-              .filter((_, i) => i !== 0 || i !== needleFirstVariationIndex)
-              .map((b, i) => `chunk[start + ${i}] === ${b}`)
-              .join(" && "),
-        ) as (chunk: Uint8Array, start: number) => boolean)
+      : makeMatcher(needle, needleFirstVariationIndex)
 
@@ -48,0 +59,0 @@ return {

No alert changes

Improved metrics

Total package byte prevSize

193490

increased by1.14%

Lines of code

3197

increased by1.46%

No dependency changes