Truncates or extends the specified file, to reach the specified len
. If len
is not specified then the entire file contents are truncated.
// truncate the entire file await Deno.truncate("my_file.txt"); // truncate part of the file const file = await Deno.makeTempFile(); await Deno.writeFile(file, new TextEncoder().encode("Hello World")); await Deno.truncate(file, 7); const data = await Deno.readFile(file); console.log(new TextDecoder().decode(data)); // "Hello W"
Requires allow-write
permission.
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https://doc.deno.land/deno/stable/~/Deno.truncate