/ ink / components / RawAnsi.tsx
RawAnsi.tsx
 1  import { c as _c } from "react/compiler-runtime";
 2  import React from 'react';
 3  type Props = {
 4    /**
 5     * Pre-rendered ANSI lines. Each element must be exactly one terminal row
 6     * (already wrapped to `width` by the producer) with ANSI escape codes inline.
 7     */
 8    lines: string[];
 9    /** Column width the producer wrapped to. Sent to Yoga as the fixed leaf width. */
10    width: number;
11  };
12  
13  /**
14   * Bypass the <Ansi> → React tree → Yoga → squash → re-serialize roundtrip for
15   * content that is already terminal-ready.
16   *
17   * Use this when an external renderer (e.g. the ColorDiff NAPI module) has
18   * already produced ANSI-escaped, width-wrapped output. A normal <Ansi> mount
19   * reparses that output into one React <Text> per style span, lays out each
20   * span as a Yoga flex child, then walks the tree to re-emit the same escape
21   * codes it was given. For a long transcript full of syntax-highlighted diffs
22   * that roundtrip is the dominant cost of the render.
23   *
24   * This component emits a single Yoga leaf with a constant-time measure func
25   * (width × lines.length) and hands the joined string straight to output.write(),
26   * which already splits on '\n' and parses ANSI into the screen buffer.
27   */
28  export function RawAnsi(t0) {
29    const $ = _c(6);
30    const {
31      lines,
32      width
33    } = t0;
34    if (lines.length === 0) {
35      return null;
36    }
37    let t1;
38    if ($[0] !== lines) {
39      t1 = lines.join("\n");
40      $[0] = lines;
41      $[1] = t1;
42    } else {
43      t1 = $[1];
44    }
45    let t2;
46    if ($[2] !== lines.length || $[3] !== t1 || $[4] !== width) {
47      t2 = <ink-raw-ansi rawText={t1} rawWidth={width} rawHeight={lines.length} />;
48      $[2] = lines.length;
49      $[3] = t1;
50      $[4] = width;
51      $[5] = t2;
52    } else {
53      t2 = $[5];
54    }
55    return t2;
56  }
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