gio Comments

gio

•Created by Ami on 12/28/2023 in #help

Updated examples for "Roll your own JavaScript runtime" blog posts?

Hi! I'm in the same boat as you but I'm on part 3 trying to figure out snapshotting. I was able to finish part 1 by looking at example ops over at https://docs.rs/crate/deno_url/latest/source/lib.rs

#[op2(async)]
#[string]
pub async fn op_read_file(#[string] path: String) -> Result<String, Error> {
    let contents = tokio::fs::read_to_string(path).await?;
    Ok(contents)
}

#[op2(async)]
pub async fn op_write_file(
    #[string] path: String,
    #[string] contents: String,
) -> Result<(), Error> {
    tokio::fs::write(path, contents).await?;
    Ok(())
}

#[op2(fast)]
pub fn op_remove_file(#[string] path: String) -> Result<(), Error> {
    std::fs::remove_file(path)?;
    Ok(())
}

#[op2(async)]
#[string]
pub async fn op_read_file(#[string] path: String) -> Result<String, Error> {
    let contents = tokio::fs::read_to_string(path).await?;
    Ok(contents)
}

#[op2(async)]
pub async fn op_write_file(
    #[string] path: String,
    #[string] contents: String,
) -> Result<(), Error> {
    tokio::fs::write(path, contents).await?;
    Ok(())
}

#[op2(fast)]
pub fn op_remove_file(#[string] path: String) -> Result<(), Error> {
    std::fs::remove_file(path)?;
    Ok(())
}

and

    let runjs_extension = Extension {
        ops: vec![
            op_read_file::DECL,
            op_write_file::DECL,
            op_remove_file::DECL,
            op_fetch::DECL,
        ]
        .into(),
        ..Default::default()
    };

    let runjs_extension = Extension {
        ops: vec![
            op_read_file::DECL,
            op_write_file::DECL,
            op_remove_file::DECL,
            op_fetch::DECL,
        ]
        .into(),
        ..Default::default()
    };

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