What are the differences between the js engine of this warehouse and quickjs?

[Misaka299]

I need an embedded engine of a scripting language to provide scripting functions for my program. The script is mainly used to write crawlers. I chose js. But I ran into some problems when using this repository.

code:

use quick_js::{Context,JsValue};

fn main() {
    let context = Context::new().unwrap();

    let x = context.eval_as::<String>(r#"
        import * as std from "std";
        var file = std.open("std_open_file.js","w");
        file.puts("123");
        file.puts("456");
        file.puts("789");
        file.close();

        var x = 100 + 250; x.toString()
    "#).unwrap();
    println!("{}",x)
}

log:

C:/Users/Admin/.cargo/bin/cargo.exe run --color=always --package druid_view --example js
warning: unused manifest key: dependencies.druid.required-features
warning: unused import: `JsValue`
 --> examples\js.rs:1:24
  |
1 | use quick_js::{Context,JsValue};
  |                        ^^^^^^^
  |
  = note: \`#[warn(unused_imports)]\` on by default

warning: \`druid_view\` (example "js") generated 1 warning
    Finished dev [unoptimized + debuginfo] target(s) in 0.21s
     Running \`target\debug\examples\js.exe\`
thread 'main' panicked at 'called \`Result::unwrap()\` on an \`Err\` value: Exception(String("SyntaxError: expecting \'(\'"))\', examples\js.rs:15:9
stack backtrace:
   0: rust_begin_unwind
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\/library\std\src/panicking.rs:517:5
   1: core::panicking::panic_fmt
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\/library\core\src/panicking.rs:101:14
   2: core::result::unwrap_failed
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\/library\core\src/result.rs:1617:5
   3: core::result::Result<T,E>::unwrap
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\library\core\src/result.rs:1299:23
   4: js::main
             at .\examples\js.rs:6:13
   5: core::ops::function::FnOnce::call_once
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\library\core\src\ops/function.rs:227:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
error: process didn't exit successfully: `target\debug\examples\js.exe` (exit code: 101)

Process finished with exit code 101

and i can't use "console.log"

code:

use quick_js::{Context,JsValue};

fn main() {
    let context = Context::new().unwrap();

    let x = context.eval_as::<String>(r#"
        console.log("xxxxx");

        var x = 100 + 250; x.toString()
    "#).unwrap();
    println!("{}",x)
}

log:

C:/Users/Admin/.cargo/bin/cargo.exe run --color=always --package druid_view --example js
warning: unused manifest key: dependencies.druid.required-features
warning: unused import: `JsValue`
 --> examples\js.rs:1:24
  |
1 | use quick_js::{Context,JsValue};
  |                        ^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: `druid_view` (example "js") generated 1 warning
    Finished dev [unoptimized + debuginfo] target(s) in 0.19s
     Running `target\debug\examples\js.exe`
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Exception(String("ReferenceError: 'console' is not defined"))', examples\js.rs:10:9
stack backtrace:
   0: rust_begin_unwind
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\/library\std\src/panicking.rs:517:5
   1: core::panicking::panic_fmt
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\/library\core\src/panicking.rs:101:14
   2: core::result::unwrap_failed
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\/library\core\src/result.rs:1617:5
   3: core::result::Result<T,E>::unwrap
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\library\core\src/result.rs:1299:23
   4: js::main
             at .\examples\js.rs:6:13
   5: core::ops::function::FnOnce::call_once
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35\library\core\src\ops/function.rs:227:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
error: process didn't exit successfully: `target\debug\examples\js.exe` (exit code: 101)

Process finished with exit code 101

I want to add XPath support to it to improve productivity and reduce the threshold for writing crawlers. I checked the "https://github.com/quickjs-zh/quickjs" document. I plan to use loadscript to use "https://github.com/google/wicked-good-xpath". But I can't even use "console.log".

My ultimate goal is to add js script support to my program and the xpath in the script is used to write crawlers. How can I solve the problem I encountered? I want to know what are the differences between the js engine of this warehouse and quickjs? So that I can deal with the problems that I will encounter now and in the future.

who can help me?