feat(cli): generate mutation names typing

Author: charlypoly

lib/cli.ts

@@ -3,6 +3,9 @@
 import * as codegen from 'apollo-codegen';
 import * as yargs from 'yargs';
 import * as path from 'path';
+import * as fs from 'fs';
+import { fstat } from 'fs';
+import { generateMutationTypesDef, extractMutationsNames } from './utils';
 
 process.on('unhandledRejection', (error) => { throw error });
 process.on('uncaughtException' as any, handleError);
@@ -57,6 +60,20 @@ yargs
             console.log('[1/1] downloadSchema ...');
             await codegen.downloadSchema(url, output, header, insecure, method);
             console.log('[2/2] generate mutations enum type ...');
+            try {
+                const mutationNames = extractMutationsNames(output);
+                if (mutationNames) {
+                    fs.writeFileSync(
+                        path.resolve('./', 'mutations.d.ts'),
+                        generateMutationTypesDef(mutationNames)
+                    )
+                } else {
+                    console.error('Failed to generate mutations typing');
+                }
+            } catch (error) {
+                console.error(error)
+            }
+            console.log('Done.');
         }
     )
     .fail(function (message, error) {

lib/utils.ts

@@ -0,0 +1,26 @@
+import * as fs from 'fs';
+import { IntrospectionQuery, IntrospectionObjectType } from 'graphql';
+
+export const extractMutationsNames = (filePath: string): string[] | void => {
+    const content = fs.readFileSync(filePath);
+    if (content) {
+        const json = JSON.parse(content.toString()).data as IntrospectionQuery;
+        const { name: mutationType } = json.__schema.mutationType;
+        const mutations = json.__schema.types.find(t => t.name === mutationType) as (IntrospectionObjectType | undefined);
+        return mutations ?
+            mutations.fields.map(f => f.name) :
+            [];
+    } else {
+        throw new Error(`Unable to read ${filePath}`);
+    }
+}
+
+export const generateMutationTypesDef = (mutations: string[]): string => {
+    return (
+        `
+/* this file is generated, do not edit and keep it in tsconfig.rootDir scope! */
+
+declare type ApolloFormMutationNames = ${mutations.map(m => `'${m}'`).join(' | ')};
+`
+    )
+}

mutations.d.ts

@@ -0,0 +1,4 @@
+
+/* this file is generated, do not edit and keep it in tsconfig.rootDir scope! */
+
+declare type ApolloFormMutationNames = 'create_case' | 'create_chat' | 'create_chat_message' | 'create_community_list' | 'create_invitation' | 'create_milestone' | 'create_note' | 'create_post' | 'create_project' | 'create_space' | 'create_task' | 'destroy_case' | 'destroy_community_list' | 'destroy_milestone' | 'destroy_note' | 'destroy_planning' | 'destroy_post' | 'destroy_project' | 'extract_link_previews' | 'handle_visibility_case' | 'read_all_notifications' | 'read_chat' | 'read_notification' | 'typing_chat' | 'update_case' | 'update_community_list' | 'update_milestone' | 'update_note' | 'update_portfolio' | 'update_post' | 'update_project' | 'update_space' | 'update_task' | 'update_task_completion' | 'update_user';