Set type member for all nodes

[sapristi]

What pain point are you perceiving?.

Not all nodes have a type member set, namely the def (see

marked/lib/marked.js

Line 747 in d0f9ffd

_proto.def = function def(src) {

and also in one case for the space node:

marked/lib/marked.js

Line 485 in d0f9ffd

return {

Having a defined type member would help discriminating them when iterating the markdown tree.
It also seems to be an issue for the https://www.npmjs.com/package/@types/marked packages, where the Def interface does't have a type member, and thus it is not possible to discriminate node types in typescript (I guess it could be possible to add a type member in the interface, but it would be troublesome if this project later chose a different string).

Describe the solution you'd like

Add a type member to all nodes of the markdown tree.

[UziTech]

If you would like to create a PR to add the type that would be much appreciated.

You should just need to add a type property to the def tokenizer's return object

marked/src/Tokenizer.js

Lines 344 to 356 in d0f9ffd

	def(src) {
	const cap = this.rules.block.def.exec(src);
	if (cap) {
	if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1);
	const tag = cap[1].toLowerCase().replace(/\s+/g, ' ');
	return {
	tag,
	raw: cap[0],
	href: cap[2],
	title: cap[3]
	};
	}
	}

[sapristi]

Ok I will do one. What about the case where the space node doesn't define a type member ?

Edit: It seems the case where space doesn't define type member is rejectedby the lexer, so I guess it can stay as it is.

marked/src/Lexer.js

Line 132 in d0f9ffd

if (token.type) {