add image asset handler plugin

doric-demo/rollup.config.js

@@ -3,8 +3,50 @@ import commonjs from '@rollup/plugin-commonjs'
 import bundles from './build/index'
 import fs from 'fs'
 import path from 'path'
-import buble from '@rollup/plugin-buble';
+import buble from '@rollup/plugin-buble'
 import json from "@rollup/plugin-json"
+import image from '@rollup/plugin-image'
+
+function searchImages(dir, images) {
+    const files = fs.readdirSync(dir)
+    files.forEach((item, index) => {
+        var fullPath = path.join(dir, item)
+        const stat = fs.statSync(fullPath)
+        if (stat.isDirectory()) {
+            searchImages(path.join(dir, item), images)
+        } else {
+            if(fullPath.endsWith('.png')) {
+                images.push(fullPath)
+            }
+        }
+    })
+    return images
+}
+
+const allImages = []
+searchImages('src', allImages)
+
+function mkdirsSync(dirname) {
+    if (fs.existsSync(dirname)) {
+        return true
+    } else {
+        if (mkdirsSync(path.dirname(dirname))) {
+            fs.mkdirSync(dirname)
+            return true
+        }
+    }
+}
+
+allImages.forEach((value) => {
+    let path = __dirname + '/build/' + value
+    let index = path.lastIndexOf('/')
+    mkdirsSync(path.substring(0, index))
+
+    fs.copyFile(__dirname + '/' + value, __dirname + '/build/' + value, error => {
+        console.log(error)
+    })
+})
+
 
 function readDirs(dirPath, files) {
     if (fs.statSync(dirPath).isDirectory()) {
@@ -51,11 +93,12 @@ export default
                     resolve({ mainFields: ["jsnext"] }),
                     commonjs(),
                     json(),
+                    image(),
                 ],
                 external: ['reflect-metadata', 'doric'],
                 onwarn: function (warning) {
-                    if (warning.code === 'THIS_IS_UNDEFINED') { return; }
-                    console.warn(warning.message);
+                    if (warning.code === 'THIS_IS_UNDEFINED') { return }
+                    console.warn(warning.message)
                 }
             }
         }).concat(
@@ -76,11 +119,12 @@ export default
                             buble({
                                 transforms: { dangerousForOf: true }
                             }),
+                            image(),
                         ],
                         external: ['reflect-metadata', 'doric'],
                         onwarn: function (warning) {
-                            if (warning.code === 'THIS_IS_UNDEFINED') { return; }
-                            console.warn(warning.message);
+                            if (warning.code === 'THIS_IS_UNDEFINED') { return }
+                            console.warn(warning.message)
                         }
                     }
                 }))