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Handle missing run script files cleanly #11

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Merged
ralyodio merged 1 commit into from
Jul 12, 2026
Merged

Handle missing run script files cleanly #11

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14 changes: 12 additions & 2 deletions bin/moshcode.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,11 @@ const DEFAULT_SCRIPT = `while (alive) {

function readScript(arg) {
if (!arg || arg === "-") return fs.readFileSync(0, "utf8"); // stdin (paste)
return fs.readFileSync(arg, "utf8");
try {
return fs.readFileSync(arg, "utf8");
} catch (e) {
throw new Error(`moshcode run: cannot read script ${JSON.stringify(arg)} (${e.code || e.message})`);
}
}

function parseMax(value) {
Expand Down Expand Up @@ -138,7 +142,13 @@ async function main() {
}
else file = a;
}
const src = file ? readScript(file) : (fs.existsSync(EXAMPLE) ? fs.readFileSync(EXAMPLE, "utf8") : DEFAULT_SCRIPT);
let src;
try {
src = file ? readScript(file) : (fs.existsSync(EXAMPLE) ? fs.readFileSync(EXAMPLE, "utf8") : DEFAULT_SCRIPT);
} catch (e) {
console.error(String(e.message || e));
process.exit(1);
}
let ast;
try { ast = compile(src); }
catch (e) { console.error(String(e.message || e)); process.exit(1); }
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9 changes: 9 additions & 0 deletions test/run-options.test.mjs
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Expand Up @@ -33,3 +33,12 @@ test("run rejects multiple script files", () => {
assert.equal(result.status, 1);
assert.match(result.stderr, /moshcode run: expected one script file/);
});

test("run reports missing script files without a stack trace", () => {
const missing = join(tmpdir(), "moshcode-missing-script.mosh");
const result = run([missing, "--dry-run"]);

assert.equal(result.status, 1);
assert.match(result.stderr, /moshcode run: cannot read script/);
assert.doesNotMatch(result.stderr, /Error: moshcode run/);
});
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