replico
v1.0.1
Published
A REPL with support for await
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replico
A REPL with support for await
- Track Promise results
- Support for
await
keyword (expl:user = await db.User.get('foobar')
will populate user variable once promise is resolved)
Installation
# For the command line "replico"
npm install --global replico
# And/or to use replico api in a project
npm install --save replico
Command line usage
replico
Api usage
Basic replacement of repl (see https://nodejs.org/dist/latest-v5.x/docs/api/repl.html#repl_class_replserver)
var replico = require('replico')
let replServer = replico({
prompt: `${CBLUE}\u2234 ${CRESET}`,
terminal: true
})
Define your own eval
var replico = require('replico')
let replServer = replico({
prompt: `MyRepl> `,
terminal: true
})
replServer.eval = function (cmd, context, filename, callback) {
if (cmd === 'foo') {
// ... your own implementation
return callback(null, 'bar')
} else if (/yield/.test(cmd)) {
// Or use replico's eval (with bluebird-co):
return replico.coEval.call(this, cmd, context, filename, callback)
} else {
// If you need it, superEval is a reference to the default repl eval
return this.superEval(cmd, context, filename, callback)
}
}
Plug it in your project
'use strict'
const net = require('net')
const replico = require('replico')
const CRESET = '\x1b[0m'
const CBLUE = '\x1b[34m'
var history = ['console.log("ok")']
net.createServer((socket) => {
socket.write(`${CBLUE}Welcome${CRESET}\n`)
function extendContext (context) {
context.actions = {
hello (who) {
socket.write('OK ' + who + '\n')
}
}
}
let replServer = replico({
prompt: `${CBLUE}\u2234 ${CRESET}`,
input: socket,
output: socket,
terminal: true,
history: history
})
replServer.on('exit', () => {
history = replServer.history.slice()
socket.end()
})
replServer.on('reset', extendContext)
replServer.defineCommand('chist', {
help: 'Clear history',
action: function () {
history = []
replServer.history = []
this.displayPrompt()
}
})
extendContext(replServer.context)
}).listen(5423, function () {
console.log('Ready on 5423')
})
Then you can use netcat or repli:
nc localhost 5423
# Or repli
repli localhost 5423