1 files changed, 15 insertions, 0 deletions
diff --git a/viewer/tests/importmap.mjs b/viewer/tests/importmap.mjs
new file mode 100644
index 0000000..301d2bc
--- /dev/null
+++ b/viewer/tests/importmap.mjs
@@ -0,0 +1,15 @@
+// Import first, then load viewer modules with dynamic import(): bare 'three' resolves as in index.html.
+import { register } from 'node:module';
+import { readFileSync } from 'node:fs';
+
+export const HTML = readFileSync(new URL('../index.html', import.meta.url), 'utf8');
+export const IMPORTS = JSON.parse(HTML.match(/<script type="importmap">([\s\S]*?)<\/script>/)[1]).imports;
+register('./importmap-hooks.mjs', import.meta.url, { data: { imports: IMPORTS, base: new URL('../', import.meta.url).href } });
+
+export function fakeCanvas(width = 800, height = 400) {
+  const c = new EventTarget();
+  Object.assign(c, { style: {}, ownerDocument: new EventTarget(), setPointerCapture() {}, releasePointerCapture() {},
+    getRootNode: () => new EventTarget(), getBoundingClientRect: () => ({ left: 0, top: 0, width, height }) });
+  return c;
+}
+export const fakeRenderer = () => ({ domElement: fakeCanvas(), render() {} });