Miguel PalhasandClaude Opus 5
031c80a40b
The browser app had no tests and no way to run any: package.json shipped dev/build/preview/typecheck, and CI installed Node and pnpm but never ran anything with them. Its densest logic was module-private, so even with a runner none of it was reachable. Extracts four pure modules out of DOM-heavy ones — tree.ts (directory grouping), keys.ts (terminal escape encoding), paths.ts (completion arithmetic), html.ts (one escaper, replacing four copies). Extraction rather than `export` because attach.ts imports xterm's CSS at module level, which a node test cannot load. CatalogStore takes an injectable socket factory, scheduler and refetch, so the reducer and the backoff schedule run without a server. snapshot() now returns a copy: it returned the live object while events mutated it in place, so listeners could not diff and every event rebuilt the whole tree. 36 tests across 6 files, and a `web` CI job running typecheck, test and build. vitest is pinned to 2.x — 4.x requires vite >= 6 and this is vite 5. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
29 lines
1.2 KiB
TypeScript
29 lines
1.2 KiB
TypeScript
// Terminal key encoding: control characters, meta prefixes, and cursor escape
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// sequences. Table-driven and easy to get subtly wrong, so it lives apart from
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// the DOM and is tested directly.
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export function toCtrl(ch: string): string {
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if (ch.length !== 1) return ch;
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const upper = ch.toUpperCase().codePointAt(0) ?? 0;
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if (upper >= 0x40 && upper <= 0x5f) return String.fromCodePoint(upper & 0x1f);
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if (ch === " ") return "\x00";
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if (ch === "?") return "\x7f";
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return ch;
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}
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/** Apply pending modifiers to a single typed character: Ctrl → control code,
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* Alt → ESC prefix (xterm meta). Both compose (Ctrl+Alt = ESC + control). */
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export function applyModsToChar(ch: string, ctrl: boolean, alt: boolean): string {
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let out = ctrl ? toCtrl(ch) : ch;
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if (alt) out = "\x1b" + out;
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return out;
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}
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/** Cursor/nav-key sequence, promoted to the modified CSI form when Ctrl/Alt are
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* pending — `\x1b[1;<n><final>`, n = 1 + alt(2) + ctrl(4) (xterm convention). */
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export function cursorSeq(final: string, ctrl: boolean, alt: boolean): string {
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if (!ctrl && !alt) return `\x1b[${final}`;
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const n = 1 + (alt ? 2 : 0) + (ctrl ? 4 : 0);
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return `\x1b[1;${n}${final}`;
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}
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