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A comment on Show HN: A resource for drawing complex primitives in JavaScript.

Re:Show HN: A resource for drawing complex primitives in Jav... by tlb on Tuesday September 15, 2015 @04:12PM (#10222859)
Is it reliable to add methods to a built-in object like CanvasRenderingContext2D? I avoid it, but perhaps just out of superstition.
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Re:Show HN: A resource for drawing complex primitives in Jav... by makepanic on Tuesday September 15, 2015 @04:50PM (#10223099)
You're right, extending the prototype of builtin objects is almost always a bad idea.

See String.prototype.contains → String.prototype.includes because mootools extended the String prototype[1]

[1] - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

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Re:Show HN: A resource for drawing complex primitives in Jav... by MJSplot_author on Tuesday September 15, 2015 @05:01PM (#10223185)
If you know what you are doing it's fine, but it might cause incompatibility issues from namespace collisions.

You can rearrange the code to accept a context as the first argument if you are worried.

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