build: add the basic type declaration (#30)

package.json

@@ -13,6 +13,8 @@
     "bigdata"
   ],
   "main": "dist/index.js",
+  "module": "dist/index.js",
+  "types": "dist/index.d.ts",
   "scripts": {
     "antlr4": "node build/antlr4.js",
     "build": "rm -rf dist && tsc",

src/parser/flinksql.ts

@@ -9,7 +9,7 @@ export default class FlinkSQL extends BasicParser {
         const lexer = <unknown> new FlinkSqlLexer(chars) as Lexer;
         return lexer;
     }
-    public createParserFromLexer(lexer: Lexer) {
+    public createParserFromLexer(lexer: Lexer): any {
         const tokenStream = new CommonTokenStream(lexer);
         return new FlinkSqlParser(tokenStream);
     }

src/parser/generic.ts

@@ -9,7 +9,7 @@ export default class GenericSQL extends BasicParser {
         const lexer = <unknown> new SqlLexer(chars) as Lexer;
         return lexer;
     }
-    public createParserFromLexer(lexer: Lexer) {
+    public createParserFromLexer(lexer: Lexer): any {
         const tokenStream = new CommonTokenStream(lexer);
         return new SqlParser(tokenStream);
     }

src/parser/hive.ts

@@ -9,7 +9,7 @@ export default class HiveSQL extends BasicParser {
         const lexer = <unknown> new HiveSqlLexer(chars) as Lexer;
         return lexer;
     }
-    public createParserFromLexer(lexer: Lexer) {
+    public createParserFromLexer(lexer: Lexer): any {
         const tokenStream = new CommonTokenStream(lexer);
         return new HiveSql(tokenStream);
     }

src/parser/plsql.ts

@@ -10,7 +10,7 @@ export default class PLSQLParser extends BasicParser {
         const lexer = <unknown> new PlSqlLexer(chars) as Lexer;
         return lexer;
     }
-    public createParserFromLexer(lexer: Lexer) {
+    public createParserFromLexer(lexer: Lexer): any {
         const tokenStream = new CommonTokenStream(lexer);
         return new PlSqlParser(tokenStream);
     }

src/parser/spark.ts

@@ -9,7 +9,7 @@ export default class SparkSQL extends BasicParser {
         const lexer = <unknown> new SparkSqlLexer(chars) as Lexer;
         return lexer;
     }
-    public createParserFromLexer(lexer: Lexer) {
+    public createParserFromLexer(lexer: Lexer): any {
         const tokenStream = new CommonTokenStream(lexer);
         return new SparkSqlParser(tokenStream);
     }

tsconfig.json

@@ -5,6 +5,7 @@
         "allowJs":true,
         "target": "es6",
         "module": "commonjs",
+        "declaration": true,
         "noUnusedLocals": true,
         "noUnusedParameters": false,
         "skipLibCheck": true,