Add lsif support

.gitignore

@@ -4,3 +4,5 @@ Thumbs.db
 */node_modules/
 */out/
 */.vs/
+*.lsif
+*.db

.scripts/update-lsif.js

@@ -0,0 +1,30 @@
+const fs = require('fs').promises;
+const path = require('path');
+
+const { samples, lspSamples } = require('./samples')
+
+const root = path.join(__dirname, '..');
+
+async function main() {
+	const references = [];
+	for (const sample of samples) {
+		try {
+			const stat = await fs.stat(path.join(root, sample.path, 'tsconfig.json'));
+			if (stat.isFile()) {
+				references.push(`../${sample.path}/tsconfig.json`);
+			}
+		} catch (error) {
+			// Ignore error of stat call.
+		}
+	}
+	const tsconfig = {
+		compilerOptions: {
+		},
+		files: [
+		],
+		references: references.map(reference => { return { path: reference }})
+	}
+	await fs.writeFile(path.join(root, '.lsif', 'tsconfig.json'), JSON.stringify(tsconfig, undefined, '\t'), { encoding: 'utf8' });
+}
+
+main().catch(console.error);

lsif.json

@@ -0,0 +1,4 @@
+{
+	"project": ".lsif/tsconfig.json",
+	"out": "vscode-extension-samples.lsif"
+}

package.json

@@ -8,6 +8,7 @@
 		"lint": "node .scripts/run-script.js lint",
 		"install": "node .scripts/run-command.js npm install",
 		"auditFix": "node .scripts/run-command.js npm audit fix",
-		"update-readme": "node .scripts/update-readme.js"
+		"update-readme": "node .scripts/update-readme.js",
+		"update-lsif": "node .scripts/update-lsif.js"
 	}
 }