fix: revert non-working changes made in denoland#72

cli.ts

@@ -2,17 +2,13 @@
 
 import { ensureDir } from "https://deno.land/[email protected]/fs/ensure_dir.ts";
 import { parse } from "https://deno.land/[email protected]/flags/mod.ts";
-import { join } from "https://deno.land/[email protected]/path/mod.ts";
 import { relative } from "https://deno.land/[email protected]/path/mod.ts";
 import { codegen } from "./codegen.ts";
 
 const flags = parse(Deno.args, { "--": true });
 const release = !!flags.release;
 
-const metafile = join(
-  Deno.env.get("OUT_DIR") || await findRelativeTarget(),
-  "bindings.json",
-);
+const metafile = "bindings.json";
 
 function build() {
   const cmd = ["cargo", "build"];

deno_bindgen_macro/src/lib.rs

@@ -7,7 +7,6 @@ use std::env;
 use std::fs::OpenOptions;
 use std::io::Read;
 use std::io::Write;
-use std::path::Path;
 use syn::parse_macro_input;
 use syn::parse_quote;
 use syn::ItemFn;
@@ -23,6 +22,8 @@ use crate::derive_struct::process_struct;
 use crate::meta::Glue;
 use crate::meta::Type;
 
+const METAFILE: &str = "bindings.json";
+
 #[cfg(target_endian = "little")]
 const ENDIANNESS: bool = true;
 
@@ -31,35 +32,25 @@ const ENDIANNESS: bool = false;
 
 #[proc_macro_attribute]
 pub fn deno_bindgen(attr: TokenStream, input: TokenStream) -> TokenStream {
-  let metafile_path: String = match env::var("OUT_DIR") {
-    Ok(out_dir) => Path::new(&out_dir)
-      .join("bindings.json")
-      .into_os_string()
-      .into_string()
-      .unwrap(),
-    Err(_e) => String::from("bindings.json"),
-  };
-
-  let mut metadata: Glue =
-    match OpenOptions::new().read(true).open(metafile_path.as_str()) {
-      Ok(mut fd) => {
-        let mut meta = String::new();
-        fd.read_to_string(&mut meta)
-          .expect("Error reading meta file");
+  let mut metadata: Glue = match OpenOptions::new().read(true).open(METAFILE) {
+    Ok(mut fd) => {
+      let mut meta = String::new();
+      fd.read_to_string(&mut meta)
+        .expect("Error reading meta file");
 
-        serde_json::from_str(&meta).unwrap_or_default()
-      }
-      Err(_) => Glue {
-        little_endian: ENDIANNESS,
-        name: env::var("CARGO_CRATE_NAME").unwrap_or_default(),
-        ..Default::default()
-      },
-    };
+      serde_json::from_str(&meta).unwrap_or_default()
+    }
+    Err(_) => Glue {
+      little_endian: ENDIANNESS,
+      name: env::var("CARGO_CRATE_NAME").unwrap_or_default(),
+      ..Default::default()
+    },
+  };
 
   let mut metafile = OpenOptions::new()
     .write(true)
     .create(true)
-    .open(metafile_path.as_str())
+    .open(METAFILE)
     .expect("Error opening meta file");
 
   match syn::parse::<ItemFn>(input.clone()) {