55 lines
1.4 KiB
JavaScript
55 lines
1.4 KiB
JavaScript
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'use strict';
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const { fromEvent } = require('rxjs');
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const { filter, map, share, takeUntil } = require('rxjs/operators');
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function normalizeKeypressEvents(value, key) {
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return { value, key: key || {} };
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}
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module.exports = function (rl) {
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const keypress = fromEvent(rl.input, 'keypress', normalizeKeypressEvents)
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.pipe(takeUntil(fromEvent(rl, 'close')))
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// Ignore `enter` key. On the readline, we only care about the `line` event.
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.pipe(filter(({ key }) => key.name !== 'enter' && key.name !== 'return'));
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return {
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line: fromEvent(rl, 'line'),
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keypress,
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normalizedUpKey: keypress.pipe(
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filter(
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({ key }) =>
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key.name === 'up' || key.name === 'k' || (key.name === 'p' && key.ctrl)
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),
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share()
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),
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normalizedDownKey: keypress.pipe(
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filter(
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({ key }) =>
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key.name === 'down' || key.name === 'j' || (key.name === 'n' && key.ctrl)
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),
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share()
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),
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numberKey: keypress.pipe(
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filter((e) => e.value && '123456789'.indexOf(e.value) >= 0),
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map((e) => Number(e.value)),
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share()
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),
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spaceKey: keypress.pipe(
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filter(({ key }) => key && key.name === 'space'),
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share()
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),
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aKey: keypress.pipe(
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filter(({ key }) => key && key.name === 'a'),
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share()
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),
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iKey: keypress.pipe(
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filter(({ key }) => key && key.name === 'i'),
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share()
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),
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};
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};
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