add strikethrough, silly name

__tests__/__snapshots__/disabling-tokenizers.test.js.snap

@@ -17,6 +17,28 @@ Object {
 }
 `;
 
+exports[`disabling delete 1`] = `
+Object {
+  "children": Array [
+    Object {
+      "children": Array [
+        Object {
+          "children": Array [
+            Object {
+              "type": "text",
+              "value": "strikethrough",
+            },
+          ],
+          "type": "delete",
+        },
+      ],
+      "type": "paragraph",
+    },
+  ],
+  "type": "root",
+}
+`;
+
 exports[`disabling emphasis 1`] = `
 Object {
   "children": Array [

__tests__/disabling-tokenizers.test.js

@@ -14,6 +14,13 @@ test('disabling emphasis', () => {
   expect(markdown.mdast(md, opts)).toMatchSnapshot();
 });
 
+test('disabling delete', () => {
+  const md = '~~strikethrough~~';
+  const opts = { disableTokenizers: { inline: ['deletion'] } };
+
+  expect(markdown.mdast(md, opts)).toMatchSnapshot();
+});
+
 test('disabling block tokenizer', () => {
   const md = '# heading 1';
   const opts = { disableTokenizers: { block: ['atxHeading'] } };