readonly source failures

init.sh

#!/bin/bash

function init() {
	source readonly.sh
	echo "inside init: ${MY_VAR[*]}" # success
}

init
echo "after init: ${MY_VAR[*]}" # failure

output.txt

$ test.sh
inside init: some-text
init.sh: line 9: MY_VAR[*]: unbound variable

readonly.sh

#!/bin/bash
readonly MY_VAR=(
	"some-text"
)

test.sh

#!/bin/bash

set -o nounset
set -o errexit
set -o pipefail

source init.sh

echo "after source: ${MY_VAR[*]}"