Hi @gorriecoe ,

These changes are reasonable. But there is something wrong with code style. Please change it and make sure all code style checking and test cases passed in CI. I will merge it and publish at version 1.0.0.

Thanks for your contributions.

Hi @adoyle-h,

I have fixed all errors except your last test.

test('throw error when no matched variable ', (t) => {
    const error = t.throws(() => logic('!{a}', {ha: false}));
    t.is(error instanceof Error, true);
    t.is(error.message, 'No any matched variable for "a"');
});

I expect to throw an error when no matched variable in the string template.
string-template('!{a}', {ha: false})) will return "!", and then eval("!") will cause the "Unexpected end of input" error.
I think missing variable is unstable and dangerous. It is better to throw error immediately at this line.

I suggest you copy and modify string-template codes (with its copyright notice) into the logic-string repo for full control. Or make a PR to the string-template repo.

@gorriecoe