修改构建方式，升级peg为0.10.0

peg/build.js

@@ -2,6 +2,8 @@ const pegjs=require("pegjs");
 const path=require("path");
 const fs=require("fs");
 
+const ENCODING="utf8"
+
 const files=[{
     source:path.resolve(process.cwd(),"./peg/comment.pegjs") ,
     target:path.resolve(process.cwd(),"./core/comment.js") ,
@@ -10,5 +12,19 @@ const files=[{
     target:path.resolve(process.cwd(),"./core/astParser.js") ,
 }];
 
-const file=fs.readFileSync(files[0].source,{encoding:"utf8"})
-pegjs.buildParser(file);
+
+function writeIn(file,data){
+    fs.writeFileSync(file,data,{encoding:ENCODING})
+}
+function build(content){
+    return pegjs.generate(content,{
+        output:"source",
+        format:"umd"
+    });
+}
+files.forEach(
+    (file)=>{
+        let fileContent=fs.readFileSync(file.source,{encoding:ENCODING})
+        writeIn(file.target,build(fileContent))
+    }
+)

peg/nquery.pegjs

@@ -278,7 +278,7 @@ table_name
         db : '',
         table : dt
       }
-      if (tail != '') {
+      if (tail) {
         obj.db = dt;
         obj.table = tail[3];
       }