feat(xlf/renderer/xlf-md): em syntax

src/xlf/renderer/xlf-md/__snapshots__/renderer-inline.test.ts.snap

@@ -1,5 +1,7 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`renders xlf to markdown renders em wrapped in <g> tags 1`] = `"Предложение номер *один*."`;
+
 exports[`renders xlf to markdown renders plain text 1`] = `"Sentence about something. Another sentence."`;
 
 exports[`renders xlf to markdown renders strong wrapped in <g> tags 1`] = `"Предложение номер **один**."`;

src/xlf/renderer/xlf-md/index.ts

@@ -17,6 +17,7 @@ class XLFMDRenderer {
             tag: this.tag.bind(this),
             g: this.g.bind(this),
             strong: this.strong.bind(this),
+            em: this.em.bind(this),
         };
     }
 
@@ -75,6 +76,16 @@ class XLFMDRenderer {
 
         return token.equivText ?? '**';
     }
+
+    em(token: XLFToken): string {
+        assert(isXLFTagToken(token));
+        token as XLFTagToken;
+        if (!token?.equivText) {
+            throw new Error(`token: ${token} missing equiv-text`);
+        }
+
+        return token.equivText ?? '*';
+    }
 }
 
 export {XLFMDRenderer};

src/xlf/renderer/xlf-md/renderer-inline.test.ts

@@ -40,4 +40,32 @@ describe('renders xlf to markdown', () => {
         const rendered = renderer.render(tokens);
         expect(rendered).toMatchSnapshot();
     });
+
+    it('renders em wrapped in <g> tags', () => {
+        const renderer = new XLFMDRenderer();
+        const tokens: Array<XLFToken> = [
+            {type: 'tag', data: 'target', nodeType: 'open'},
+            {type: 'text', data: 'Предложение номер '},
+            {
+                type: 'tag',
+                data: 'g',
+                nodeType: 'open',
+                syntax: 'em',
+                equivText: '*',
+            },
+            {type: 'text', data: 'один'},
+            {
+                type: 'tag',
+                data: 'g',
+                nodeType: 'close',
+                syntax: 'em',
+                equivText: '*',
+            },
+            {type: 'text', data: '.'},
+            {type: 'tag', data: 'target', nodeType: 'close'},
+        ];
+
+        const rendered = renderer.render(tokens);
+        expect(rendered).toMatchSnapshot();
+    });
 });