feat(dictionary): add Hachidori backend support (#266)

scripts/build-hachidori.test.ts

@@ -0,0 +1,53 @@
+import assert from 'node:assert/strict';
+import { execFileSync } from 'node:child_process';
+import { createHash } from 'node:crypto';
+import { readFileSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+import test from 'node:test';
+
+test('Hachidori staging configures Electron without changing the fork source', async () => {
+  const files = ['overlay-mode.js', 'setup-state.js', 'manifest.json'];
+  const source = (file: string) =>
+    new URL(`../vendor/hachidori/extension/${file}`, import.meta.url);
+  const before = files.map((file) => readFileSync(source(file), 'utf8'));
+
+  execFileSync(process.execPath, [
+    fileURLToPath(new URL('./build-hachidori.mjs', import.meta.url)),
+  ]);
+
+  assert.deepEqual(
+    files.map((file) => readFileSync(source(file), 'utf8')),
+    before,
+  );
+  const staged = await import(new URL('../build/hachidori/overlay-mode.js', import.meta.url).href);
+  assert.equal(staged.OVERLAY_MODE, true);
+  assert.equal(staged.HOST_CAPABILITIES.customJavaScript, false);
+  const original = await import(source('overlay-mode.js').href);
+  assert.equal(original.OVERLAY_MODE, false);
+  assert.equal(original.HOST_CAPABILITIES.customJavaScript, true);
+  // SubMiner mines media from mpv, not the overlay viewport, so the lookup
+  // highlight stays on for a first install.
+  const stagedSetup = await import(
+    new URL('../build/hachidori/setup-state.js', import.meta.url).href
+  );
+  assert.equal(stagedSetup.OVERLAY_MODE_OPTIONS.sourceHighlightEnabled, true);
+  const originalSetup = await import(source('setup-state.js').href);
+  assert.equal(originalSetup.OVERLAY_MODE_OPTIONS.sourceHighlightEnabled, false);
+  const manifest = JSON.parse(
+    readFileSync(new URL('../build/hachidori/manifest.json', import.meta.url), 'utf8'),
+  );
+  const originalManifest = JSON.parse(readFileSync(source('manifest.json'), 'utf8'));
+  assert.deepEqual(manifest, {
+    ...originalManifest,
+    permissions: originalManifest.permissions.filter(
+      (permission: string) => permission !== 'userScripts',
+    ),
+    key: manifest.key,
+  });
+  // The ID keys Hachidori's stored dictionaries and settings; changing the key orphans them.
+  const digest = createHash('sha256').update(Buffer.from(manifest.key, 'base64')).digest('hex');
+  const extensionId = [...digest.slice(0, 32)]
+    .map((digit) => String.fromCharCode(97 + parseInt(digit, 16)))
+    .join('');
+  assert.equal(extensionId, 'jpfgmfknblendgepdejlfhocdcnjjelj');
+});