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TypeScript
1234567891011121314151617181920212223242526272829export type MouseEvent = { button: number; x: number; y: number; press: boolean; motion: boolean }
/** Ink strips the first escape; retain partial SGR reports across input chunks. */export class MouseInput { private pending = "" read(input: string): MouseEvent[] | null { if (!this.pending && !/^(?:\x1b)?\[</.test(input)) return null const hadPending = this.pending !== "" const data = this.pending + input this.pending = "" if (hadPending && !/^[\d;Mm\x1b\[]/.test(input)) return null const events: MouseEvent[] = [] let rest = data while (rest) { const match = /^(?:\x1b)?\[<(\d+);(\d+);(\d+)([Mm])/.exec(rest) if (!match) { if (/^(?:\x1b)?\[<[\d;]*$/.test(rest) && rest.length < 96) this.pending = rest break } const raw = Number(match[1]) const x = Number(match[2]), y = Number(match[3]) if (Number.isSafeInteger(raw) && Number.isSafeInteger(x) && Number.isSafeInteger(y) && x > 0 && y > 0) events.push({ button: raw & ~60, x, y, press: match[4] === "M", motion: (raw & 32) !== 0 }) rest = rest.slice(match[0].length) } return events }}