@replit/clui-session
A utility for manipulating a list of React children.
When building a CLI-style interfaces this can be useful for adding and removing lines when the prompt is submitted. Each child receives an item prop that contains methods and properties related to navigating and transforming the list. By default only the first child is rendered. It's up to the child elements to call a method on props.item
to update the list. The child elements can be insered dynamically, defined up-front or a mix of both.
Basic Prompt/Output example
Here's an exmaple that renders an input and a button. When the button is clicked, 2 components are added (not rendered) to the list by calling item.insert(/* ... */).next()
. By chaining next()
the next child is rendered, which is <Output value={value} />
. By passing value
to Output
it can render something based on it. The only requirement for Output
is to call props.item.next()
at some point to show the next Prompt
. This could be after fetching data, a user interaction, or right when the component mounts (useEffect(() => props.item.next(), [])
.
import React, { useState } from 'react'
import { render } from 'react-dom'
import Session from '@replit/clui-session';
const useFetchData = (value) => {
return value;
}
const Output = (props) => {
const data = useFetchData(props.value);
useEffect(() => {
if (data) {
props.item.next();
}
}, [data]);
if (!data) {
return <div>Loading...</div>;
}
return <div>output: ${data}</div>,
}
const Prompt = (props) => {
const [value, setValue] = useState('');
const onClick = () => {
props.item.insert(
<Output value={value} />,
<Prompt />,
).next();
}
return (
<div>
<input value={value} onChange={e => setValue(e.target.value)}/>
<button onClick={onClick}>run</button>
<div>;
);
}
render(
<Session>
<Prompt />
</Session>,
document.getElementById('root'),
);
Components
Step
is a utility component that automatically shows the next child by calling item.next
when the component mounts
<Session>
<Step><div>step 1</div></Step>
<Step wait={2000}><div>step 2 (paused for 1 second)</div></Step>
<Step wait={2000}><div>step 3 (paused for 1 second)</div></Step>
<Step><div>step 4</div></Step>
</Session>
Do
is a utility component the gives you access to item
inline as a render prop.
<Session>
<Do>
{item => <button onClick={item.next}>next 1</button>}
</Do>
<Do>
{item => <button onClick={item.next}>next 2</button>}
</Do>
<Do>
{item => <button onClick={item.next}>next 3</button>}
</Do>
</Session>