Logical expressions to ternaries

Option: transforms.logicalToTernary

What it changes

Rewrites logical expressions as equivalent conditional expressions or guarded assignments while preserving short-circuit evaluation.

var x = a || b;
y = c && d;
f(get() ?? fallback);

var x = a;
if (!x) x = b;
y = c;
if (y) y = d;
f(((_t = get()) !== null ? _t !== void 0 : false) ? _t : fallback);

Run this transform by setting transforms.logicalToTernary to true:

obfuscate.mjs

const output = obfuscate(source, {
  transforms: {
    logicalToTernary: true,
  },
})

Open the TypeScript implementation on GitHub.

Review behavior checks and cases this transform leaves alone.

Last modified on August 26, 2026