change to module

tests/common.mjs

@@ -1,5 +1,5 @@
-const fetch = require('node-fetch');
-const exclude = require('./exclude_in_test.json');
+import fetch from 'node-fetch';
+import exclude from './exclude_in_test.json';
 
 const LINKS_OPTIONS = {
   redirect: 'error',

tests/pull_request.mjs

@@ -1,5 +1,5 @@
-const fs = require('fs-extra');
-const helper = require('./common');
+import fs from 'fs-extra';
+import helper from './common.mjs';
 
 console.log({
     DEBUG: process.env.DEBUG || false,

tests/test_all.mjs

@@ -1,6 +1,6 @@
-const fs = require('fs-extra');
-const fetch = require('node-fetch');
-const helper = require('./common');
+import fs from 'fs-extra';
+import fetch from 'node-fetch';
+import helper from './common.mjs';
 
 function envvar_undefined(variable_name) {
     throw new Error(`${variable_name} must be defined`);