with Brian LeRoux
Co-founder of begin.com
With many implementations there are many incompatibilities to resolve. This chaos has resulted in many solutions, and the most popular ones transpile code from a higher level, non-standard dialect into a "best effort", lower level standards based dialect. This enables both compatibility with new syntax capabilities while maintaining portability between different runtimes -- usually the browser and NodeJS.
But this still creates a lot of friction. Transpilers are slow to run and notoriously brittle between version updates.
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