Observed Wasm profile (2026-09-03): this README is supplementary. The support record is the only capability authority; it lists the repeatable moon run --target wasm --release results and exclusions. Options mentioned here but not promoted in that record are not compatibility guarantees.
Evaluate string, integer, file-kind, access, size, and nanosecond timestamppredicates. In addition to -e/-f/-d/-r/-w/-x, the portable profile supports-L/-h, -p/-S/-b/-c, -s, -N, and -nt/-ot. Logical negation, AND(-a), OR (-o), and parentheses are supported. Exit status is 0 for true,1 for false, and 2 for an invalid expression or runtime error. Missing filesare false; newer/older comparisons use GNU missing-side semantics.