✏️ fixed typo and added decompileType

Author: aexol

package.json

@@ -1,6 +1,6 @@
 {
   "name": "graphql-js-tree",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "private": false,
   "license": "MIT",
   "description": "GraphQL Parser providing simplier structure",

src/TreeToGraphQL/templates/TemplateUtils.ts

@@ -34,16 +34,13 @@ export class TemplateUtils {
     fn: (x: string) => string = (x) => x,
     required = false,
   ): string => {
-    if (f.type === Options.name && f.name) {
-      return fn(required ? `${f.name}!` : f.name);
-    }
     if (f.type === Options.array) {
       return TemplateUtils.resolveFieldType(f.nest, (x) => (required ? `[${fn(x)}]!` : `[${fn(x)}]`));
     }
     if (f.type === Options.required) {
       return TemplateUtils.resolveFieldType(f.nest, fn, true);
     }
-    throw new Error('Invalid field type:' + JSON.stringify(f));
+    return fn(required ? `${f.name}!` : f.name);
   };
   /**
    *

src/shared/getTypeName.ts

@@ -7,12 +7,33 @@ export const getTypeName = (f: FieldType): string => {
   return getTypeName(f.nest);
 };
 
-export const compileType = (f: FieldType, fn: (x: string) => string = (x) => x): string => {
-  if (f.type === Options.name) {
-    return fn(f.name);
-  } else if (f.type === Options.array) {
-    return compileType(f.nest, (x) => `[${fn(x)}]`);
-  } else {
-    return compileType(f.nest, (x) => `${fn(x)}!`);
+export const compileType = (f: FieldType, fn: (x: string) => string = (x) => x, required = false): string => {
+  if (f.type === Options.array) {
+    return compileType(f.nest, (x) => (required ? `[${fn(x)}]!` : `[${fn(x)}]`));
+  }
+  if (f.type === Options.required) {
+    return compileType(f.nest, fn, true);
+  }
+  return fn(f.name);
+};
+
+export const decompileType = (typeName: string): FieldType => {
+  const arrayType = typeName.endsWith(']');
+  const requiredType = typeName.endsWith('!');
+  if (arrayType) {
+    return {
+      type: Options.array,
+      nest: decompileType(typeName.substring(1, typeName.length - 1)),
+    };
+  }
+  if (requiredType) {
+    return {
+      type: Options.required,
+      nest: decompileType(typeName.substring(0, typeName.length - 1)),
+    };
   }
+  return {
+    type: Options.name,
+    name: typeName,
+  };
 };