12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394 |
- import { createPrompt, useState, useKeypress, usePrefix, isEnterKey, isBackspaceKey, makeTheme, } from '@inquirer/core';
- function isStepOf(value, step, min) {
- const valuePow = value * Math.pow(10, 6);
- const stepPow = step * Math.pow(10, 6);
- const minPow = min * Math.pow(10, 6);
- return (valuePow - (Number.isFinite(min) ? minPow : 0)) % stepPow === 0;
- }
- function validateNumber(value, { min, max, step, }) {
- if (value == null || Number.isNaN(value)) {
- return false;
- }
- else if (value < min || value > max) {
- return `Value must be between ${min} and ${max}`;
- }
- else if (step !== 'any' && !isStepOf(value, step, min)) {
- return `Value must be a multiple of ${step}${Number.isFinite(min) ? ` starting from ${min}` : ''}`;
- }
- return true;
- }
- export default createPrompt((config, done) => {
- const { validate = () => true, min = -Infinity, max = Infinity, step = 1, required = false, } = config;
- const theme = makeTheme(config.theme);
- const [status, setStatus] = useState('idle');
- const [value, setValue] = useState(''); // store the input value as string and convert to number on "Enter"
- // Ignore default if not valid.
- const validDefault = validateNumber(config.default, { min, max, step }) === true
- ? config.default?.toString()
- : undefined;
- const [defaultValue = '', setDefaultValue] = useState(validDefault);
- const [errorMsg, setError] = useState();
- const prefix = usePrefix({ status, theme });
- useKeypress(async (key, rl) => {
- // Ignore keypress while our prompt is doing other processing.
- if (status !== 'idle') {
- return;
- }
- if (isEnterKey(key)) {
- const input = value || defaultValue;
- const answer = input === '' ? undefined : Number(input);
- setStatus('loading');
- let isValid = true;
- if (required || answer != null) {
- isValid = validateNumber(answer, { min, max, step });
- }
- if (isValid === true) {
- isValid = await validate(answer);
- }
- if (isValid === true) {
- setValue(String(answer ?? ''));
- setStatus('done');
- done(answer);
- }
- else {
- // Reset the readline line value to the previous value. On line event, the value
- // get cleared, forcing the user to re-enter the value instead of fixing it.
- rl.write(value);
- setError(isValid || 'You must provide a valid numeric value');
- setStatus('idle');
- }
- }
- else if (isBackspaceKey(key) && !value) {
- setDefaultValue(undefined);
- }
- else if (key.name === 'tab' && !value) {
- setDefaultValue(undefined);
- rl.clearLine(0); // Remove the tab character.
- rl.write(defaultValue);
- setValue(defaultValue);
- }
- else {
- setValue(rl.line);
- setError(undefined);
- }
- });
- const message = theme.style.message(config.message, status);
- let formattedValue = value;
- if (status === 'done') {
- formattedValue = theme.style.answer(value);
- }
- let defaultStr;
- if (defaultValue && status !== 'done' && !value) {
- defaultStr = theme.style.defaultAnswer(defaultValue);
- }
- let error = '';
- if (errorMsg) {
- error = theme.style.error(errorMsg);
- }
- return [
- [prefix, message, defaultStr, formattedValue]
- .filter((v) => v !== undefined)
- .join(' '),
- error,
- ];
- });
|