utilsac - npm Package Compare versions

Comparing version 5.4.1 to 5.5.0

package.json

 {
   "name": "utilsac",
-  "version": "5.4.1",
+  "version": "5.5.0",
   "description": "tools mostly",
@@ -5,0 +5,0 @@ "main": "files.js",

readme.md

@@ -36,3 +36,4 @@ # Utilities and random js files
         timeCallback,
-        timePromise
+        timePromise,
+        memoizeAsStrings
     } from "path.../utility.js";
@@ -39,0 +40,0 @@ ```

utility.js

@@ -10,3 +10,4 @@ export {
     timeCallback,
-    timePromise
+    timePromise,
+    memoizeAsStrings
 };
@@ -173,1 +174,27 @@
 };
+
+const memoizeAsStrings = function (functionToMemoize) {
+    /*
+    todo explain better the limitations and benefits of this approach
+    joins together the args as strings to compare
+    false possible cache hits when "-" is inside the string
+    */
+    const separator = "-";
+    const previousResults = {};
+    return function (...args) {
+        const argumentsAsStrings = args.map(String).join(separator);
+        /*
+        without .map(String) works but undefined and null become empty strings
+        const argumentsAsStrings = args.join(separator);
+        */
+        if (Object.prototype.hasOwnProperty.call(previousResults, argumentsAsStrings)) {
+            // cache hit
+            return previousResults[argumentsAsStrings];
+        }
+        // not yet in cache
+        const result = functionToMemoize(...args);
+        // add it for later
+        previousResults[argumentsAsStrings] = result;
+        return result;
+    };
+};

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Improved metrics

Total package byte prevSize

18146

increased by5.78%

Lines of code

295

increased by9.67%

Number of lines in readme file

61

increased by1.67%

No dependency changes