✨ Oauth1 support and Twitter node

packages/nodes-base/nodes/Twitter/GenericFunctions.ts

@@ -0,0 +1,44 @@
+import {
+	OptionsWithUrl,
+ } from 'request';
+
+import {
+	IHookFunctions,
+	IExecuteFunctions,
+	IExecuteSingleFunctions,
+	ILoadOptionsFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+} from 'n8n-workflow';
+
+export async function twitterApiRequest(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IHookFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+	let options: OptionsWithUrl = {
+		method,
+		body,
+		qs,
+		url: uri || `https://api.twitter.com/1.1${resource}`,
+		json: true
+	};
+	try {
+		if (Object.keys(option).length !== 0) {
+			options = Object.assign({}, options, option);
+		}
+		if (Object.keys(body).length === 0) {
+			delete options.body;
+		}
+		//@ts-ignore
+		return await this.helpers.requestOAuth1.call(this, 'twitterOAuth1Api', options);
+	} catch (error) {
+		if (error.response && error.response.body && error.response.body.errors) {
+			// Try to return the error prettier
+			const errorMessages = error.response.body.errors.map((error: IDataObject) => {
+				return error.message;
+			});
+			throw new Error(`Twitter error response [${error.statusCode}]: ${errorMessages.join(' | ')}`);
+		}
+
+		throw error;
+	}
+}