✨ Allow empty schema parsing :D

Author: aexol

package.json

@@ -1,6 +1,6 @@
 {
   "name": "graphql-js-tree",
-  "version": "0.1.7",
+  "version": "0.1.8",
   "private": false,
   "license": "MIT",
   "description": "GraphQL Parser providing simplier structure",

src/Parser/index.ts

@@ -67,7 +67,10 @@ export class Parser {
   static parse = (schema: string, excludeRoots: string[] = [], libraries = ''): ParserTree => {
     let parsedSchema: DocumentNode | undefined;
     const compiledSchema = [libraries, schema].join('\n');
-
+    const isEmptySchema = compiledSchema.replace(/\s+/gm, '').length === 0;
+    if (isEmptySchema) {
+      return { nodes: [] };
+    }
     try {
       parsedSchema = parse(compiledSchema);
     } catch (error) {

src/__tests__/Parser/Empty.spec.ts

@@ -0,0 +1,14 @@
+import { Parser } from '../../Parser';
+
+describe('Empty schema tests on parser', () => {
+  it('Creates empty tree from schema', () => {
+    const schema = `          `;
+    const tree = Parser.parse(schema);
+    expect(tree.nodes.length).toEqual(0);
+  });
+  it('Creates empty tree from schema', () => {
+    const schema = `  \t\t      \n\n\n  `;
+    const tree = Parser.parse(schema);
+    expect(tree.nodes.length).toEqual(0);
+  });
+});

src/shared/index.ts

@@ -39,7 +39,7 @@ export const decompileType = (typeName: string): FieldType => {
 };
 
 export const generateNodeId = (name: string, dataType: AllTypes, args: ParserField[]) => {
-  const s = [name, dataType, args.map((a) => a.name)].join('-');
+  const s = [name, dataType, args.map((a) => a.name).join('-')].join('-');
   return cyrb53(s);
 };
 const cyrb53 = (str: string, seed = 0) => {