Port to meriyah for modern syntax support#64

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ajhyndman wants to merge 3 commits intohughsk:masterfrom

ajhyndman:meriyah

Commits on Dec 11, 2021

Add test covering some modern syntax features
Andrew Hyndman
committed
Port from esprima to meriyah parser
Andrew Hyndman
committed
yarn lockfile
Andrew Hyndman
committed