Fix: Exposed purge globally, linting (fixes #271)

[oliverfoster]

fixes #271

Fix

• Made purge globally accessible at window.mejs.purge
• Performed linting corrections on mediaLibrariesOverrides.js

Testing

Original code breaks when navigating away from Presentation Components to the menu, on destruction of mediaView line 399

adapt-contrib-media/js/mediaView.js

Line 399 in 01fadec

purge(this.$el[0]);

This is as the function purge lives in a different file:

adapt-contrib-media/js/mediaLibrariesOverrides.js

Lines 27 to 43 in 01fadec

	const purge = function (d) {
	let a = d.attributes;
	if (a) {
	for (let i = a.length - 1; i >= 0; i -= 1) {
	const n = a[i].name;
	if (typeof d[n] === 'function') {
	d[n] = null;
	}
	}
	}
	a = d.childNodes;
	if (a) {
	for (let i = 0, count = a.length; i < count; i += 1) {
	purge(d.childNodes[i]);
	}
	}
	};

[cahirodoherty-learningpool]

👀

[joe-allen-89]

👍

[github-actions]

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