andras/reconcile
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Simplify build scripts

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This commit is contained in:
Andras Schmelczer 2026-10-29 08:18:21 +00:00
commit 03856fe868
1 changed files with 300 additions and 634 deletions
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99
reconcile-js/scripts/build-rn.mjs
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@ -3,19 +3,14 @@
// wasm2js (pure-JS) translation.
import { execFileSync } from 'node:child_process';
import { existsSync, readdirSync, readFileSync, rmSync, writeFileSync } from 'node:fs';
import { readFileSync, rmSync, writeFileSync } from 'node:fs';
import { dirname, resolve } from 'node:path';
import { fileURLToPath, pathToFileURL } from 'node:url';
import { homedir } from 'node:os';
const here = dirname(fileURLToPath(import.meta.url));
const reconcileJsDir = resolve(here, '..');
const repoRoot = resolve(reconcileJsDir, '..');
const releaseWasm = resolve(
repoRoot,
'target/wasm32-unknown-unknown/release/reconcile_text.wasm'
);
const outDir = resolve(reconcileJsDir, 'pkg-rn');
const bgWasm = resolve(outDir, 'reconcile_text_bg.wasm');
const bgWasmJs = resolve(outDir, 'reconcile_text_bg.wasm.js');
@ -29,87 +24,19 @@ function run(cmd, args) {
execFileSync(cmd, args, { stdio: 'inherit' });
}
// Locate the wasm-bindgen CLI. It MUST match the `wasm-bindgen` crate version pinned
// in Cargo.toml: a mismatched CLI emits bindings the runtime can't use. So we resolve
// the required version first and verify every candidate against it, failing loudly
// rather than silently falling back to whatever other version happens to be around.
function findWasmBindgen() {
const cargoToml = readFileSync(resolve(repoRoot, 'Cargo.toml'), 'utf8');
const wanted = cargoToml.match(
/wasm-bindgen\s*=\s*\{[^}]*version\s*=\s*"([^"]+)"/
)?.[1];
if (!wanted) {
throw new Error(
'[build-rn] Could not parse the pinned wasm-bindgen version from Cargo.toml, so ' +
'the required CLI version is unknown. Has the dependency declaration changed?'
);
}
// 1. On PATH: accept it only if its version matches the pin.
let onPath = null;
try {
onPath = execFileSync('which', ['wasm-bindgen'], { encoding: 'utf8' }).trim();
} catch {
/* not on PATH; try the wasm-pack cache next */
}
if (onPath) {
const version = execFileSync(onPath, ['--version'], { encoding: 'utf8' }).match(
/\d+\.\d+\.\d+/
)?.[0];
if (version !== wanted) {
throw new Error(
`[build-rn] wasm-bindgen on PATH (${onPath}) is ${version ?? 'an unknown version'}, ` +
`but Cargo.toml pins ${wanted}. Install the matching CLI ` +
`(\`cargo install wasm-bindgen-cli --version ${wanted}\`) or remove the mismatched one.`
);
}
return onPath;
}
const cacheRoots = [
resolve(homedir(), 'Library/Caches/.wasm-pack'),
resolve(homedir(), '.cache/.wasm-pack'),
];
for (const root of cacheRoots) {
if (!existsSync(root)) {
continue;
}
for (const entry of readdirSync(root)) {
const candidate = resolve(root, entry, 'wasm-bindgen');
if (!existsSync(candidate)) {
continue;
}
let version;
try {
version = execFileSync(candidate, ['--version'], { encoding: 'utf8' }).match(
/\d+\.\d+\.\d+/
)?.[0];
} catch {
continue; // not an invokable wasm-bindgen; ignore
}
if (version === wanted) {
return candidate;
}
}
}
throw new Error(
`[build-rn] No wasm-bindgen ${wanted} found on PATH or in the wasm-pack cache. ` +
'Run `wasm-pack build --target web --features wasm` first (it caches the matching ' +
`wasm-bindgen), or \`cargo install wasm-bindgen-cli --version ${wanted}\`.`
);
}
if (!existsSync(releaseWasm)) {
throw new Error(
`Missing ${releaseWasm}.\nRun \`wasm-pack build --target web --features wasm\` from the repo root first.`
);
}
console.log('[build-rn] generating bundler-target bindings with wasm-bindgen');
console.log('[build-rn] generating bundler-target bindings with wasm-pack');
rmSync(outDir, { recursive: true, force: true });
const wasmBindgen = findWasmBindgen();
run(wasmBindgen, ['--target', 'bundler', '--out-dir', outDir, releaseWasm]);
run('wasm-pack', [
'build',
repoRoot,
'--target',
'bundler',
'--out-dir',
outDir,
'--no-opt',
'--features',
'wasm',
]);
// --- Patch wasm-bindgen's cached-memory getters for wasm2js -----------------
//