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SMotaal/surrogate-pairs.js

Created October 10, 2017 17:12
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Surrogate Pairs Roundtrip
Raw
surrogate-pairs.js
(
(
str,
c = `${str}`.codePointAt(0),
p = 0x10000, q = 0x400, r = 0xD800, s = 0xDC00,
h = ~~((c-p) / q) + r, l = (c - p) % q + s
) => ({
h, l,
c1: c, c2: (h - r) * q + l - s + p
})
)('\u{2CAE}')
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