Class ArrayApi

Element-wise equality. true when both arrays have the same length and every paired element matches under ===.

Cheap reference-identity short-circuit at the top — equal(a, a) skips the per-element walk.

Prefix membership. true when prefix is element-wise equal to the leading slice of full (including the empty-prefix and equal-arrays cases). Element comparison is ===.

isPrefix([], anything) is true (empty prefix matches everything); isPrefix(x, x) is true (a sequence is a prefix of itself).