65 lines
2.4 KiB
JavaScript
65 lines
2.4 KiB
JavaScript
import { createPrompt, useState, useKeypress, usePrefix, isEnterKey, isBackspaceKey, } from '@inquirer/core';
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import chalk from 'chalk';
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export default createPrompt((config, done) => {
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const { validate = () => true } = config;
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const [status, setStatus] = useState('pending');
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const [defaultValue = '', setDefaultValue] = useState(config.default);
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const [errorMsg, setError] = useState(undefined);
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const [value, setValue] = useState('');
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const isLoading = status === 'loading';
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const prefix = usePrefix(isLoading);
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useKeypress(async (key, rl) => {
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// Ignore keypress while our prompt is doing other processing.
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if (status !== 'pending') {
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return;
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}
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if (isEnterKey(key)) {
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const answer = value || defaultValue;
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setStatus('loading');
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const isValid = await validate(answer);
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if (isValid === true) {
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setValue(answer);
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setStatus('done');
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done(answer);
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}
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else {
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// Reset the readline line value to the previous value. On line event, the value
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// get cleared, forcing the user to re-enter the value instead of fixing it.
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rl.write(value);
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setError(isValid || 'You must provide a valid value');
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setStatus('pending');
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}
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}
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else if (isBackspaceKey(key) && !value) {
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setDefaultValue(undefined);
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}
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else if (key.name === 'tab' && !value) {
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setDefaultValue(undefined);
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rl.clearLine(0); // Remove the tab character.
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rl.write(defaultValue);
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setValue(defaultValue);
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}
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else {
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setValue(rl.line);
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setError(undefined);
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}
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});
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const message = chalk.bold(config.message);
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let formattedValue = value;
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if (typeof config.transformer === 'function') {
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formattedValue = config.transformer(value, { isFinal: status === 'done' });
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}
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else if (status === 'done') {
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formattedValue = chalk.cyan(value);
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}
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let defaultStr;
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if (defaultValue && status !== 'done' && !value) {
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defaultStr = chalk.dim(`(${defaultValue})`);
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}
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let error = '';
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if (errorMsg) {
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error = chalk.red(`> ${errorMsg}`);
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}
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return [[prefix, message, defaultStr, formattedValue].filter(Boolean).join(' '), error];
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});
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