worker-size.sh

#!/usr/bin/env bash
# Calculate bundle sizes for Cloudflare Pages worker modules.
# Output similar to `wrangler pages dev`.

set -euo pipefail

cd "$(dirname "$0")/.."

DIST_DIR="${1:-dist/_worker.js}"

find "$DIST_DIR" -name "*.mjs" | grep -v ".map$" | \
xargs wc -c | \
sort -k1 -n | \
awk '
BEGIN {
    total_bytes = 0
    module_count = 0
}
{
    if (/total/) {
        total_bytes = $1
    } else {
        printf "%8.1fK  %s\n", $1/1024, $2
        module_count++
    }
}
END {
    printf "\033[1;33m%8.1fK\033[0m  total (%d modules)\n", total_bytes/1024, module_count
}'