feat: clone edge renderer instance with shared data

Fixes: #156

src/edge/renderer.ts

@@ -40,6 +40,19 @@ export class EdgeRenderer {
     this.#globals = globals
   }
 
+  /**
+   * Clone renderer instance with shared data
+   */
+  clone() {
+    const renderer = new EdgeRenderer(
+      this.#compiler,
+      this.#asyncCompiler,
+      this.#processor,
+      this.#globals
+    )
+    return renderer.share(this.#locals)
+  }
+
   /**
    * Share local variables with the template. They will overwrite the
    * globals

tests/edge.spec.ts

@@ -424,6 +424,25 @@ test.group('Edge', () => {
     const output1 = await edge.render('foo', { username: 'virk' })
     assert.equal(output1.trim(), '@!foo({ username })')
   })
+
+  test('clone renderer with shared data', async ({ assert, fs }) => {
+    const edge = new Edge()
+    await fs.create('foo.edge', "Hello {{ username || 'guest' }}")
+
+    edge.mount(fs.basePath)
+
+    const tmpl = edge.createRenderer()
+    tmpl.share({ username: 'nikk' })
+    const tmpl1 = tmpl.clone()
+
+    const output = await tmpl.render('foo', {})
+    const output1 = await tmpl1.render('foo', {})
+    const output2 = await edge.render('foo', {})
+
+    assert.equal(output.trim(), 'Hello nikk')
+    assert.equal(output1.trim(), 'Hello nikk')
+    assert.equal(output2.trim(), 'Hello guest')
+  })
 })
 
 test.group('Edge | regression', () => {