lambda-live-debugger
Version:
Debug Lambda functions locally like it is running in the cloud
177 lines (176 loc) • 6.97 kB
JavaScript
import { createPrompt, useState, useKeypress, usePrefix, usePagination, useRef, useMemo, useEffect, isBackspaceKey, isEnterKey, isUpKey, isDownKey, isNumberKey, Separator, ValidationError, makeTheme, } from '@inquirer/core';
import { cursorHide } from '@inquirer/ansi';
import { styleText } from 'node:util';
import figures from '@inquirer/figures';
const selectTheme = {
icon: { cursor: figures.pointer },
style: {
disabled: (text) => styleText('dim', `- ${text}`),
description: (text) => styleText('cyan', text),
keysHelpTip: (keys) => keys
.map(([key, action]) => `${styleText('bold', key)} ${styleText('dim', action)}`)
.join(styleText('dim', ' • ')),
},
indexMode: 'hidden',
keybindings: [],
};
function isSelectable(item) {
return !Separator.isSeparator(item) && !item.disabled;
}
function normalizeChoices(choices) {
return choices.map((choice) => {
if (Separator.isSeparator(choice))
return choice;
if (typeof choice !== 'object' || choice === null || !('value' in choice)) {
// It's a raw value (string, number, etc.)
const name = String(choice);
return {
value: choice,
name,
short: name,
disabled: false,
};
}
const name = choice.name ?? String(choice.value);
const normalizedChoice = {
value: choice.value,
name,
short: choice.short ?? name,
disabled: choice.disabled ?? false,
};
if (choice.description) {
normalizedChoice.description = choice.description;
}
return normalizedChoice;
});
}
export default createPrompt((config, done) => {
const { loop = true, pageSize = 7 } = config;
const theme = makeTheme(selectTheme, config.theme);
const { keybindings } = theme;
const [status, setStatus] = useState('idle');
const prefix = usePrefix({ status, theme });
const searchTimeoutRef = useRef();
// Vim keybindings (j/k) conflict with typing those letters in search,
// so search must be disabled when vim bindings are enabled
const searchEnabled = !keybindings.includes('vim');
const items = useMemo(() => normalizeChoices(config.choices), [config.choices]);
const bounds = useMemo(() => {
const first = items.findIndex(isSelectable);
const last = items.findLastIndex(isSelectable);
if (first === -1) {
throw new ValidationError('[select prompt] No selectable choices. All choices are disabled.');
}
return { first, last };
}, [items]);
const defaultItemIndex = useMemo(() => {
if (!('default' in config))
return -1;
return items.findIndex((item) => isSelectable(item) && item.value === config.default);
}, [config.default, items]);
const [active, setActive] = useState(defaultItemIndex === -1 ? bounds.first : defaultItemIndex);
// Safe to assume the cursor position always point to a Choice.
const selectedChoice = items[active];
useKeypress((key, rl) => {
clearTimeout(searchTimeoutRef.current);
if (isEnterKey(key)) {
setStatus('done');
done(selectedChoice.value);
}
else if (isUpKey(key, keybindings) || isDownKey(key, keybindings)) {
rl.clearLine(0);
if (loop ||
(isUpKey(key, keybindings) && active !== bounds.first) ||
(isDownKey(key, keybindings) && active !== bounds.last)) {
const offset = isUpKey(key, keybindings) ? -1 : 1;
let next = active;
do {
next = (next + offset + items.length) % items.length;
} while (!isSelectable(items[next]));
setActive(next);
}
}
else if (isNumberKey(key) && !Number.isNaN(Number(rl.line))) {
const selectedIndex = Number(rl.line) - 1;
// Find the nth item (ignoring separators)
let selectableIndex = -1;
const position = items.findIndex((item) => {
if (Separator.isSeparator(item))
return false;
selectableIndex++;
return selectableIndex === selectedIndex;
});
const item = items[position];
if (item != null && isSelectable(item)) {
setActive(position);
}
searchTimeoutRef.current = setTimeout(() => {
rl.clearLine(0);
}, 700);
}
else if (isBackspaceKey(key)) {
rl.clearLine(0);
}
else if (searchEnabled) {
const searchTerm = rl.line.toLowerCase();
const matchIndex = items.findIndex((item) => {
if (Separator.isSeparator(item) || !isSelectable(item))
return false;
return item.name.toLowerCase().startsWith(searchTerm);
});
if (matchIndex !== -1) {
setActive(matchIndex);
}
searchTimeoutRef.current = setTimeout(() => {
rl.clearLine(0);
}, 700);
}
});
useEffect(() => () => {
clearTimeout(searchTimeoutRef.current);
}, []);
const message = theme.style.message(config.message, status);
const helpLine = theme.style.keysHelpTip([
['↑↓', 'navigate'],
['⏎', 'select'],
]);
let separatorCount = 0;
const page = usePagination({
items,
active,
renderItem({ item, isActive, index }) {
if (Separator.isSeparator(item)) {
separatorCount++;
return ` ${item.separator}`;
}
const indexLabel = theme.indexMode === 'number' ? `${index + 1 - separatorCount}. ` : '';
if (item.disabled) {
const disabledLabel = typeof item.disabled === 'string' ? item.disabled : '(disabled)';
return theme.style.disabled(`${indexLabel}${item.name} ${disabledLabel}`);
}
const color = isActive ? theme.style.highlight : (x) => x;
const cursor = isActive ? theme.icon.cursor : ` `;
return color(`${cursor} ${indexLabel}${item.name}`);
},
pageSize,
loop,
});
if (status === 'done') {
return [prefix, message, theme.style.answer(selectedChoice.short)]
.filter(Boolean)
.join(' ');
}
const { description } = selectedChoice;
const lines = [
[prefix, message].filter(Boolean).join(' '),
page,
' ',
description ? theme.style.description(description) : '',
helpLine,
]
.filter(Boolean)
.join('\n')
.trimEnd();
return `${lines}${cursorHide}`;
});
export { Separator } from '@inquirer/core';