Add common/src/without.ts

packages/common/src/index.ts

@@ -12,3 +12,4 @@ export * from './IUserTeam'
 export * from './ReadonlyRecord'
 export * from './URLFormatter'
 export * from './indexBy'
+export * from './without'

packages/common/src/without.test.ts

@@ -0,0 +1,17 @@
+import {without} from './without'
+
+describe('without', () => {
+
+  it('filters a key out of a record', () => {
+    const records = {
+      k1: 'one',
+      k2: 'two',
+      k3: 'three',
+    }
+    expect(without(records, 'k1')).toEqual({
+      k2: 'two',
+      k3: 'three',
+    })
+  })
+
+})

packages/common/src/without.ts

@@ -0,0 +1,13 @@
+export function without<T, R extends Record<string, T>, K extends keyof R>(
+  items: R,
+  key: K,
+): Pick<R, Exclude<keyof R, K>> {
+  return Object.keys(items).reduce((obj, k) => {
+    // tslint:disable-next-line
+    if (key == k) {
+      return obj
+    }
+    (obj as any)[k] = items[k]
+    return obj
+  }, {} as Pick<R, Exclude<keyof R, K>>)
+}