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8 changes: 6 additions & 2 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -38,11 +38,15 @@ $ npm install enable --save
var enable = require('enable');

if (enable.generator) {
console.log('support generator');
console.log('supports generator');
}

if (enable.let) {
console.log('support let a = 1;');
console.log('supports `let a = 1;`');
}

if (enable.const) {
console.log('supports `const salary = 0;`')
}
```

Expand Down
9 changes: 9 additions & 0 deletions index.js
Original file line number Diff line number Diff line change
Expand Up @@ -32,3 +32,12 @@ try {
} catch (_) {
exports.let = false;
}

// const
try {
eval('(function () { const fubar = 42; return typeof fubar === "number"; }())');
exports.const = true;
} catch (_) {
exports.const = false;
}

7 changes: 7 additions & 0 deletions test/enable.test.js
Original file line number Diff line number Diff line change
Expand Up @@ -32,4 +32,11 @@ describe('enable.test.js', function () {
enable.let.should.equal(true);
}
});

it("should detect const", function() {
enable.const.should.be.a.Boolean;
if (process.version.indexOf('v0.10.') === 0) {
enable.const.should.equal(true);
}
});
});