intertype - npm Package Compare versions

Comparing version 0.112.0 to 0.113.0

lib/main.js

@@ -523,2 +523,7 @@ (function() {
       //---------------------------------------------------------------------------------------------------------
+      is_extension_of(Derived, Base) {
+        return Derived === Base || Derived.prototype instanceof Base;
+      }
+
+      //---------------------------------------------------------------------------------------------------------
       get_state_report(cfg) {
@@ -525,0 +530,0 @@ return H.get_state_report(this, cfg);

package.json

 {
   "name": "intertype",
-  "version": "0.112.0",
+  "version": "0.113.0",
   "description": "A JavaScript typechecker",
@@ -5,0 +5,0 @@ "main": "lib/main.js",

README.md

@@ -25,2 +25,3 @@
   - [Intertype `equals()`](#intertype-equals)
+  - [Intertype `is_extension_of()`](#intertype-is_extension_of)
   - [To Do](#to-do)
@@ -495,2 +496,8 @@ - [Is Done](#is-done)
 
+## Intertype `is_extension_of()`
+
+* `is_extension_of: ( Derived, Base ) -> Derived is Base or (Derived::) instanceof Base`
+* tests whether class `Derived` is derived from class `Base`; this includes the case where `Derived` is just
+  an alias for `Base` (i.e. JS `Derived === Base`)
+
 ## To Do
@@ -677,2 +684,4 @@
 * **[–]** catch errors thrown inside a type's `create()` function and convert them to validation errors
+* **[–]** implement `is_extension_of Derived, Base` using `Derived is Base or (Derived::) instanceof Base`
+  (first seen in MoonRiver)
 
@@ -679,0 +688,0 @@

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Improved metrics

Total package byte prevSize

360925

increased by0.34%

Number of downloads

45

increased by36.36%

Lines of code

1937

increased by0.21%

Number of lines in readme file

755

increased by1.21%

No dependency changes