@helios-lang/type-utils - npm Package Compare versions

Comparing version 0.1.5 to 0.1.6

package.json

 {
     "name": "@helios-lang/type-utils",
-    "version": "0.1.5",
+    "version": "0.1.6",
     "description": "Global utility types",
@@ -5,0 +5,0 @@ "main": "src/index.js",

src/index.d.ts

@@ -7,3 +7,4 @@ declare global {
 export const None: null
+export function expectSome<T>(option: Option<T>, msg?: string): T
 export function isNone<T>(option: Option<T>): option is null | undefined
 export function isSome<T>(option: Option<T>): option is T

src/index.js

@@ -8,7 +8,21 @@ /**
  * @template T
- * @param {Option<T>} opt
+ * @param {Option<T>} option
+ * @param {string} msg
+ * @returns {T}
+ */
+export function expectSome(option, msg = `unexpected ${option}`) {
+    if (option !== null && option !== undefined) {
+        return option
+    } else {
+        throw new Error(msg)
+    }
+}
+
+/**
+ * @template T
+ * @param {Option<T>} option
  * @returns {opt is T}
  */
-export function isSome(opt) {
-    return opt !== null && opt !== undefined
+export function isSome(option) {
+    return option !== null && option !== undefined
 }
@@ -18,7 +32,7 @@
  * @template T
- * @param {Option<T>} opt
+ * @param {Option<T>} option
  * @returns {opt is (null | undefined)}
  */
-export function isNone(opt) {
-    return opt === null || opt === undefined
+export function isNone(option) {
+    return option === null || option === undefined
 }

No alert changes

Improved metrics

Total package byte prevSize

3766

increased by10.96%

Lines of code

57

increased by32.56%

No dependency changes