Transpile also dependencies in node_modules

Some of the dependencies in node_modules, such as "p-queue", are not ES5
compatible, so they need to be transpiled to work in older browsers like
Internet Explorer 11.

Besides not excluding the dependencies for babel-loader in
"webpack.common.js" the global Babel configuration must be defined in
"babel.config.js", as in Babel 7.X, when ".babelrc.js" is used, all the
dependencies in "node_modules" are ignored (even if whitelisted in the
configuration file itself).

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

build/files-checker.php

@@ -22,7 +22,6 @@
 $expectedFiles = [
 	'.',
 	'..',
-	'.babelrc.js',
 	'.codecov.yml',
 	'.drone.yml',
 	'.eslintrc.js',
@@ -46,6 +45,7 @@ $expectedFiles = [
 	'autotest-external.sh',
 	'autotest-js.sh',
 	'autotest.sh',
+	'babel.config.js',
 	'build',
 	'CHANGELOG.md',
 	'CODE_OF_CONDUCT.md',

webpack.common.js

@@ -81,7 +81,10 @@ module.exports = []
 				{
 					test: /\.js$/,
 					loader: 'babel-loader',
-					exclude: /node_modules/
+					// automatically detect necessary packages to
+					// transpile in the node_modules folder
+					exclude: /node_modules(?!(\/|\\)(p-finally|p-limit|p-locate|p-queue|p-timeout|p-try)(\/|\\))/
+
 				},
 				{
 					test: /\.(png|jpg|gif)$/,