lukasz@kubok:~/til$

Today I Learned

Short notes on what I learn and build, written for myself first.

Activity

Current streak2 days
Longest streak2 days
Total notes2
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Wrangler jsonc configuration supports comments

·today·#cloudflare#wrangler··

Wrangler accepts wrangler.jsonc instead of wrangler.toml or plain JSON, which allows inline comments for configuration settings like compatibility flags.

wrangler preview --json prints log lines before the JSON

·yesterday·#cloudflare#wrangler#ci··

wrangler preview --json does not print only JSON: Wrangler writes log lines to the same output first, so piping it straight into jq fails.

Strip everything before the first line that starts with {:

output="$(npx wrangler preview --name "$PREVIEW_NAME" --json)"
printf '%s\n' "$output" | sed -n '/^{/,$p' | jq -er '.preview.urls[0]'
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