initial commit

Author: kamicane

.gitignore

@@ -0,0 +1,2 @@
+yarn.lock
+.vscode

README.md

@@ -0,0 +1,37 @@
+# ow-prop-type
+
+React prop-types validation with [ow](https://github.com/sindresorhus/ow)
+
+1. when `process.env.NODE_ENV` is `'production'` it will be a shim function
+2. it exports the `ow` object (or shim in `'production'`) as a property
+3. will return the unprocessed `ArgumentError`
+
+## Why
+
+[prop-types](https://github.com/facebook/prop-types) has only very basic validation, and it is super verbose to add custom validators.
+
+## Example
+
+```js
+import propType, { ow } from 'ow-prop-type'
+
+class MyComponent extends React.Component {
+  static propTypes = {
+    // propType with a predicate
+    total: propType(
+      ow
+        .number
+        .integer
+        .greaterThanOrEqual(0)
+    ),
+    // propType with a callback, must return a predicate
+    current: propType((props) => {
+      return ow
+        .number
+        .integer
+        .greaterThanOrEqual(0)
+        .lessThanOrEqual(props.total)
+    }
+  }
+}
+```

index.js

@@ -0,0 +1,46 @@
+'use strict'
+
+let ow, propType
+
+function devPropType (predicateOrCallback) {
+  return typeof predicateOrCallback === 'function'
+    ? (props, propName, ...args) => {
+      const predicate = predicateOrCallback(props, propName, ...args)
+      const value = props[propName]
+      try {
+        ow(value, predicate)
+      } catch (err) {
+        return err
+      }
+    }
+    : (props, propName) => {
+      const value = props[propName]
+      try {
+        ow(value, predicateOrCallback)
+      } catch (err) {
+        return err
+      }
+    }
+}
+
+function productionPropType () {}
+
+// copy+paste ow/dev-only.js because it does not seem to be published
+if (process.env.NODE_ENV === 'production') {
+  const shim = new Proxy(() => {}, {
+    get: () => shim,
+    apply: () => shim
+  })
+
+  ow = shim
+  propType = productionPropType
+} else {
+  ow = require('ow')
+  propType = devPropType
+}
+
+// exporting ow since it might be the shim
+propType.ow = ow
+propType.propType = propType
+
+module.exports = propType

package.json

@@ -0,0 +1,23 @@
+{
+  "name": "ow-prop-type",
+  "version": "0.0.0",
+  "description": "react prop-types validation with ow",
+  "keywords": [
+    "ow",
+    "prop-types",
+    "react",
+    "validation"
+  ],
+  "homepage": "https://github.com/kamicane/ow-prop-type#readme",
+  "bugs": "https://github.com/kamicane/ow-prop-type/issues",
+  "repository": "github:kamicane/ow-prop-type",
+  "license": "MIT",
+  "author": "Valerio Proietti <kamicane@gmail.com>",
+  "main": "index.js",
+  "dependencies": {
+    "ow": "^0.15.0"
+  },
+  "devDependencies": {
+    "standard": "^14.3.1"
+  }
+}