2.3.0: Add mapRecord and mapRecordFilterUndefined

package.json

@@ -1,6 +1,6 @@
 {
     "name": "@glideapps/ts-necessities",
-    "version": "2.2.4",
+    "version": "2.3.0",
     "description": "Small utilities to make life with TypeScript easier",
     "main": "dist/index.js",
     "types": "dist/index.d.ts",
@@ -24,6 +24,6 @@
         "eslint": "^7.18.0",
         "eslint-plugin-import": "^2.22.1",
         "typedoc": "^0.25.13",
-        "typescript": "^5.4.4"
+        "typescript": "^5.4.5"
     }
 }

src/index.ts

@@ -168,6 +168,27 @@ export function filterUndefined<T>(arr: Iterable<T | undefined>): T[] {
     return result;
 }
 
+export function mapRecord<T, U>(r: Record<string, T>, f: (v: T, n: string) => U): Record<string, U> {
+    const result: Record<string, U> = {};
+    for (const [name, value] of Object.entries(r)) {
+        result[name] = f(value, name);
+    }
+    return result;
+}
+
+export function mapRecordFilterUndefined<T, U>(
+    r: Record<string, T>,
+    f: (v: T, n: string) => U | undefined
+): Record<string, U> {
+    const result: Record<string, U> = {};
+    for (const [name, value] of Object.entries(r)) {
+        const o = f(value, name);
+        if (o === undefined) continue;
+        result[name] = o;
+    }
+    return result;
+}
+
 /**
  * Returns a string representation of `e`, which is supposed to be an
  * exception.

tsconfig.json

@@ -12,9 +12,9 @@
         "downlevelIteration": true,
         "noFallthroughCasesInSwitch": true,
         "noImplicitReturns": true,
-        "target": "es6",
+        "target": "esnext",
         "outDir": "dist",
-        "lib": ["es6", "dom"],
+        "lib": ["es2017", "dom"],
         "baseUrl": "./src",
         "typeRoots": ["./node_modules/@types"]
     },