fix some bugs and pptx

.github/workflows/deploy.yml

@@ -0,0 +1,24 @@
+
+name: deployment
+on:
+  push:
+    branch: master
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js 
+        uses: actions/setup-node@v3
+        with:
+          node-version: 14.x
+          cache: 'yarn'
+      - run: yarn
+      - name: build
+        run: |
+          yarn compile
+          yarn build  
+      - name: publish
+        uses: JS-DevTools/npm-publish@v1
+        with:
+          token: ${{ secrets.NPM_TOKEN }}

__tests__/loader.js

@@ -1,5 +1,6 @@
 import zipDoc from "../src/document"
 import openxml from "../src/openxml/document"
+import pptx from "../src/openxml/pptx/document"
 import docx4js from "../src"
 
 describe("loader", function(){
@@ -78,5 +79,46 @@ describe("loader", function(){
 		it("can create", function(){
 			return docx4js.create().then(check)
 		})
+
+		it("can extract text from pptx",()=>{
+			return pptx.load(`${loader}.pptx`)
+				.then(pptx=>{
+					const slides=new Proxy([[[]]], {
+						get(target, key){
+							if(key==="current"){
+								return target[target.length-1]
+							}else if(key==="p"){
+								const slide=slides.current
+								return slide[slide.length-1]
+							}
+							return target[key]
+						}
+					})
+					pptx.render(function createElement(type,props,children){
+						switch(type){
+							case "slideLayout":
+								slides.current.splice(0,Number.MAX_SAFE_INTEGER,[])
+							break
+							case "slide":
+								slides.current.pop()
+								slides.push([[]])
+							break
+							case "p":
+								slides.current.push([])
+							break
+							case "t":
+								slides.p.push(children)
+							break	
+						}
+						return {type,props,children}
+					})
+					slides.pop()
+					const content=slides.map((paragraphs,i)=>`slide #${i+1}:\n${paragraphs.map(a=>a.join("")).join("\n")}`).join("\n")
+					return content
+				}).then(parsed=>{
+					expect(parsed.indexOf("slide #1")).not.toBe(-1)
+					expect(parsed.indexOf("slide #2")).not.toBe(-1)
+				})
+		})
     })
 })