refactor(xtask): handle some errors

Author: Boshen

xtask/src/lib.rs

@@ -25,7 +25,8 @@ fn generate_file(file: &str, token_stream: proc_macro2::TokenStream) {
 
 pub fn parse_caniuse_global() -> Result<Caniuse> {
     let path = root().join("node_modules/caniuse-db/fulldata-json/data-2.0.json");
-    Ok(serde_json::from_slice(&fs::read(path)?)?)
+    let json = fs::read_to_string(path)?;
+    Ok(serde_json::from_str(&json)?)
 }
 
 #[derive(Deserialize)]

xtask/src/main.rs

@@ -3,7 +3,7 @@ use std::{fs, process::Command};
 use anyhow::Result;
 
 fn main() -> Result<()> {
-    let dir = project_root::get_project_root().unwrap().join("src/generated");
+    let dir = project_root::get_project_root()?.join("src/generated");
     let _ = fs::remove_dir_all(&dir);
     let _ = fs::create_dir(&dir);
 
@@ -18,7 +18,7 @@ fn main() -> Result<()> {
     xtask::caniuse_browsers::build_caniuse_browsers(&caniuse)?;
     xtask::caniuse_region_matching::build_caniuse_region_matching(&caniuse)?;
 
-    Command::new("cargo").arg("fmt").status().unwrap();
+    Command::new("cargo").arg("fmt").status()?;
 
     Ok(())
 }