Update index.js to allow for multiple URL support

[rawr51919]

WIP update to index.js to allow for multiple URL support in the API by adding a new argument field (ties into PR vitalets/google-translate-token#2). This fixes matheuss#60, matheuss/google-translate-token#10 and part of issue #4.

[vitalets]

Could you add a unit test to ensure that it works:

test('translate via custom tld', async t => {
    try {
        const res = await translate('vertaler', {tld: 'cn'});

        t.is(res.text, 'translator');
        t.false(res.from.language.didYouMean);
        t.is(res.from.language.iso, 'nl');
        t.false(res.from.text.autoCorrected);
        t.is(res.from.text.value, '');
        t.false(res.from.text.didYouMean);
    } catch (err) {
        t.fail(err.code);
    }
});

[rawr51919]

@vitalets I'll add that in, just I need some pointing in the right direction on what exactly should be done to finish the implementation of this extra field.

[rawr51919]

Done. Added the test in, just now I need to figure out how I'm gonna actually implement that extra field. (It's just using com as a default value for now until I can figure out how I should go about implementing it, and what exactly should be done if an invalid argument is passed to it (say, con).

[vitalets]

I think you should add default com value similar to existing defaults:

opts.tld = opts.tls || 'com';

and use it when building url:

var url = 'https://translate.google.' + opts.tld + '/translate_a/single';

[codecov-io]

Codecov Report

Merging #7 into master will increase coverage by 0.11%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master       #7      +/-   ##
==========================================
+ Coverage    92.3%   92.42%   +0.11%     
==========================================
  Files           2        2              
  Lines          65       66       +1     
==========================================
+ Hits           60       61       +1     
  Misses          5        5

Impacted Files	Coverage Δ
index.js	90.19% <100%> (+0.19%)	⬆️
languages.js	100% <0%> (ø)	⬆️

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[rawr51919]

That's done. Will this allow for the extra URL argument to be passed in and be used in translation (it'll still need work on the token side of things to get the token from the URL passed here)?

[rawr51919]

@vitalets Does this look any better codewise? I've done what you needed me to do here.

[vitalets]

I'v cloned your branch made some fix and merged. Thank you! 👍