Fix expression vs statement mistake in JS AST
Fix expression vs statement mistake in JS AST

squiggle-lang/squiggle-lang,squiggle-lang/squiggle-lang,saikobee/squiggle,saikobee/squiggle,squiggle-lang/squiggle-lang,saikobee/squiggle,wavebeem/squiggle,saikobee/expr-lang,wavebeem/squiggle,saikobee/expr-lang,saikobee/expr-lang,wavebeem/squiggle