feat(project): init

scripts/load-env.mjs

@@ -0,0 +1,51 @@
+import { readFileSync } from "node:fs";
+import path from "node:path";
+
+export function loadEnvFiles({
+  cwd = process.cwd(),
+  files = [".env", ".env.local"],
+  override = false,
+} = {}) {
+  const originalKeys = new Set(Object.keys(process.env));
+
+  for (const fileName of files) {
+    const filePath = path.join(cwd, fileName);
+
+    try {
+      const source = readFileSync(filePath, "utf8");
+      applyEnvSource(source, { override, originalKeys });
+    } catch {
+      continue;
+    }
+  }
+}
+
+function applyEnvSource(source, { override, originalKeys }) {
+  for (const line of source.split(/\r?\n/)) {
+    const trimmedLine = line.trim();
+
+    if (!trimmedLine || trimmedLine.startsWith("#")) {
+      continue;
+    }
+
+    const separatorIndex = trimmedLine.indexOf("=");
+
+    if (separatorIndex === -1) {
+      continue;
+    }
+
+    const key = trimmedLine.slice(0, separatorIndex).trim();
+    const rawValue = trimmedLine.slice(separatorIndex + 1).trim();
+    const value = rawValue.replace(/^['"]|['"]$/g, "");
+
+    if (!key) {
+      continue;
+    }
+
+    if (!override && originalKeys.has(key)) {
+      continue;
+    }
+
+    process.env[key] = value;
+  }
+}