add initial marp implementation with sample content and build configuration

node_modules/markdown-it-front-matter/test/index.js

@@ -0,0 +1,139 @@
+const assert = require('assert');
+
+describe('Markdown It Front Matter', () => {
+
+  let foundFrontmatter = undefined;
+  const md = require('markdown-it')()
+    .use(require('../index'), fm => { foundFrontmatter = fm; });
+
+  beforeEach(() => {
+    foundFrontmatter = undefined;
+  });
+
+  it('should parse empty front matter', () => {
+    assert.equal(
+      md.render([
+        '---',
+        '---',
+        '# Head'
+      ].join('\n')),
+      '\n<h1>Head</h1>\n');
+
+    assert.equal(foundFrontmatter, '');
+  });
+
+  it('should parse basic front matter', () => {
+    assert.equal(
+      md.render([
+        '---',
+        'x: 1',
+        '---',
+        '# Head'
+      ].join('\n')),
+      '\n<h1>Head</h1>\n');
+
+    assert.equal(foundFrontmatter, 'x: 1');
+  });
+
+  it('should parse until triple dots', () => {
+    assert.equal(
+      md.render([
+        '---',
+        'x: 1',
+        '...',
+        '# Head'
+      ].join('\n')),
+      '\n<h1>Head</h1>\n');
+
+    assert.equal(foundFrontmatter, 'x: 1');
+  });
+
+  it('should parse front matter with indentation', () => {
+    const frontmatter = [
+      'title: Associative arrays',
+      'people:',
+      '    name: John Smith',
+      '    age: 33',
+      'morePeople: { name: Grace Jones, age: 21 }',
+    ].join('\n');
+
+    assert.equal(
+      md.render([
+        '---',
+        frontmatter,
+        '---',
+        '# Head'
+      ].join('\n')),
+      '\n<h1>Head</h1>\n');
+
+    assert.equal(foundFrontmatter, frontmatter);
+  });
+
+  it('should ignore spaces after front matter delimiters', () => {
+    assert.equal(
+      md.render([
+        '---   ',
+        'x: 1',
+        '---  ',
+        '# Head'
+      ].join('\n')),
+      '\n<h1>Head</h1>\n');
+
+    assert.equal(foundFrontmatter, '  \nx: 1');
+  });
+
+  it('should ignore front matter with less than 3 opening dashes', () => {
+    assert.equal(
+      md.render([
+        '--',
+        'x: 1',
+        '---',
+        '# Head'
+      ].join('\n')),
+      '<h2>--\nx: 1</h2>\n<h1>Head</h1>\n');
+
+    assert.equal(foundFrontmatter, undefined);
+  });
+
+  it('should require front matter have matching number of opening and closing dashes', () => {
+    assert.equal(
+      md.render([
+        '----',
+        'x: 1',
+        '---',
+        '# Head'
+      ].join('\n')),
+      '');
+
+    assert.equal(foundFrontmatter, 'x: 1\n---');
+  });
+
+  it('Should set correct map for front-matter token', () => {
+    {
+      const tokens = md.parse([
+        '----',
+        'x: 1',
+        '---',
+        '# Head'
+      ].join('\n'));
+
+      assert.strictEqual(tokens[0].type, 'front_matter');
+      assert.deepStrictEqual(tokens[0].map, [0, 4]);
+    }
+    {
+      const tokens = md.parse([
+        '----',
+        'title: Associative arrays',
+        'people:',
+        '    name: John Smith',
+        '    age: 33',
+        'morePeople: { name: Grace Jones, age: 21 }',
+        '---',
+        '# Head'
+      ].join('\n'));
+
+      assert.strictEqual(tokens[0].type, 'front_matter');
+      assert.deepStrictEqual(tokens[0].map, [0, 8]);
+    }
+  });
+});