Close a file descriptor.
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Close a file descriptor.
bash
npm install @stdlib/fs-close
script
tag without installation and bundlers, use the [ES Module][es-module] available on the [esm
][esm-url] branch (see [README][esm-readme]).deno
][deno-url] branch (see [README][deno-readme] for usage intructions).umd
][umd-url] branch (see [README][umd-readme]).javascript
var close = require( '@stdlib/fs-close' );
javascript
var openSync = require( '@stdlib/fs-open' ).sync;
var fd = openSync( __filename );
close( fd, done );
function done( error ) {
if ( error ) {
throw error;
}
}
javascript
var openSync = require( '@stdlib/fs-open' ).sync;
var fd = openSync( __filename );
var err = close.sync( fd );
if ( err instanceof Error ) {
throw err;
}
fs.closSync()
][node-fs] is that [fs.closeSync()
][node-fs] will throw if an error
is encountered (e.g., if given an invalid file descriptor) and this API will return an error
.javascript
var join = require( 'path' ).join;
var openSync = require( '@stdlib/fs-open' ).sync;
var close = require( '@stdlib/fs-close' );
var err;
/* Sync */
var fd = openSync( join( __dirname, 'package.json' ), 'r+' );
if ( fd instanceof Error ) {
console.error( fd.message );
} else {
err = close.sync( fd );
// returns undefined
if ( err instanceof Error ) {
console.error( err.message );
} else {
console.log( 'Synchronously closed file descriptor.' );
}
}
/* Async */
fd = openSync( join( __dirname, 'package.json' ), 'r+' );
if ( fd instanceof Error ) {
console.error( fd.message );
} else {
close( fd, done );
}
function done( error ) {
if ( error ) {
console.error( error.message );
} else {
console.log( 'Asynchronously closed file descriptor.' );
}
}