feat: initial implementation for source map from Fift assembly file f…

…rom FunC

eslint.config.mjs

@@ -87,6 +87,7 @@ export default tseslint.config(
             "unicorn/no-null": "off",
             "unicorn/no-lonely-if": "off",
             "unicorn/no-process-exit": "off",
+            "unicorn/prefer-module": "off",
         },
     },
 )

src/decompiler/source-map.ts

@@ -0,0 +1,15 @@
+import {readFileSync} from "node:fs"
+import {compileFift} from "../fift/compileFift"
+
+export type ProcedureHash = string
+
+export type SourceMap = Map<ProcedureHash, string>
+
+export async function obtainSourceMap(path: string): Promise<SourceMap> {
+    const content = readFileSync(path).toString()
+    const result = await compileFift(content, true)
+    if (result.status !== "source_map") {
+        return new Map()
+    }
+    return result.sourceMap
+}