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/**
* @license Apache-2.0
*
* Copyright (c) 2019 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* eslint-disable no-underscore-dangle */
'use strict';
// MODULES //
var logger = require( 'debug' );
var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
// VARIABLES //
var debug = logger( 'repl:command:rerequire' );
// MAIN //
/**
* Returns a callback to be invoked upon calling the `rerequire` command.
*
* @private
* @param {REPL} repl - REPL instance
* @returns {Function} callback
*/
function command( repl ) {
return onCommand;
/**
* Reloads a previously loaded module.
*
* @private
* @param {string} id - module id or path
* @returns {*} resolved module
*/
function onCommand( id ) {
var err;
if ( !isString( id ) ) {
err = new TypeError( 'invalid argument. Must provide a string. Value: `'+id+'`.' );
debug( 'Error: %s', err.message );
repl._ostream.write( 'Error: '+err.message+'\n' );
return;
}
// Resolve the module id to a path:
id = repl._context.require.resolve( id );
// Remove the module from the `require` cache:
debug( 'Removing module from require cache: %s', id );
delete repl._context.require.cache[ id ];
// Re-require the module:
debug( 'Re-requiring module: %s', id );
return repl._context.require( id );
}
}
// EXPORTS //
module.exports = command;
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