1 files changed, 57 insertions, 9 deletions
diff --git a/src/options.zig b/src/options.zig
index 3ffd24ab6..f49a42b51 100644
--- a/src/options.zig
+++ b/src/options.zig
@@ -1,26 +1,74 @@
 const std = @import("std");
 const log = @import("logger.zig");
+const fs = @import("fs.zig");
+
+usingnamespace @import("strings.zig");
+
+const assert = std.debug.assert;
 
 pub const Loader = enum {
     jsx,
     js,
     ts,
     tsx,
+    css,
+    file,
 };
 
+pub const defaultLoaders = std.ComptimeStringMap(Loader, .{
+    .{ ".jsx", Loader.jsx },
+    .{ ".js", Loader.js },
+    .{ ".mjs", Loader.js },
+    .{ ".css", Loader.css },
+    .{ ".ts", Loader.ts },
+    .{ ".tsx", Loader.tsx },
+});
+
 pub const TransformOptions = struct {
-    footer: []u8 = "",
-    banner: []u8 = "",
-    define: std.StringHashMap([]u8),
+    footer: []const u8 = "",
+    banner: []const u8 = "",
+    define: std.StringHashMap(string),
     loader: Loader = Loader.tsx,
-    resolve_dir: []u8 = "/",
+    resolve_dir: []const u8 = "/",
     react_fast_refresh: bool = false,
-    jsx_factory: []u8 = "React.createElement",
-    jsx_pragma: []u8 = "jsx",
-    inject: [][]u8,
-    public_url: []u8,
+    jsx_factory: []const u8 = "React.createElement",
+    jsx_pragma: []const u8 = "jsx",
+    inject: ?[][]const u8 = null,
+    public_url: []const u8 = "/",
     filesystem_cache: std.StringHashMap(fs.File),
-    entry_point: fs.File,
+    entry_point: *fs.File,
+
+    pub fn initUncached(allocator: *std.mem.Allocator, entryPointName: string, code: string) !TransformOptions {
+        assert(entryPointName.len > 0);
+
+        const filesystemCache = std.StringHashMap(string).init(allocator);
+
+        var entryPoint = !allocator.Create(fs.file);
+        entryPoint.path = fs.Path.init(entryPointName, allocator);
+        entryPoint.contents = code;
+
+        const define = std.StringHashMap(string).init(allocator);
+        try define.ensureCapacity(1);
+
+        define.putAssumeCapacity("process.env.NODE_ENV", "development");
+
+        var loader = Loader.file;
+        if (defaultLoaders.get(entryPoint.path.name.ext)) |defaultLoader| {
+            loader = defaultLoader;
+        }
+
+        assert(loader != .file);
+        assert(code.len > 0);
+        try filesystemCache.put(entryPointName, entryPoint);
+
+        return TransformOptions{
+            .entry_point = entryPoint,
+            .define = define,
+            .loader = loader,
+            .filesystem_cache = filesystemCache,
+            .resolve_dir = entryPoint.path.name.dir,
+        };
+    }
 };
 
 pub const OutputFile = struct {