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import { addDays, format } from "date-fns"

1⌄import { addDays, format } from "date-fns"

2⌄

3⌄const due = addDays(new Date(2026, 8, 28), 30)

4⌄

5⌄console.log(format(due, "EEEE, d MMMM"))

6⌄console.log(format(due, "yyyy-MM-dd"))

Wednesday, 28 October

2026-10-28

Done in 9ms·Runs as you type

A title, a note and the Tag dates, then Save. The Library opens with it at the top.

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All 6

nodejs2

react0

arrays0

dates1

hooks0

intl1

network0

Due date in 30 days

addDays, then format

nodejsdatesAdd tag

1⌄import { addDays, format } from "date-fns"

2⌄

3⌄const due = addDays(new Date(2026, 8, 28), 30)

4⌄

5⌄console.log(format(due, "EEEE, d MMMM"))

6⌄console.log(format(due, "yyyy-MM-dd"))

Saved 5 seconds ago

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All 6

nodejs2

react0

arrays0

dates2

hooks0

intl0

network0

Due date in 30 days

addDays, then format

nodejsdatesAdd tag

1⌄import { addDays, format } from "date-fns"

2⌄

3⌄const due = addDays(new Date(2026, 8, 28), 30)

4⌄

5⌄console.log(format(due, "EEEE, d MMMM"))

6⌄console.log(format(due, "yyyy-MM-dd"))

Saved 5 seconds ago

nodejs and dates leave two Saved Snippets. Tags that would leave none are dimmed.

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All 5

nodejs3

html1

react1

arrays1

dates1

events1

hooks1

network1

timing1

Group by key

Turn a list into an object of lists

nodejsarraysAdd tag

1⌄const people = [

2⌄ { name: "Ada", team: "compilers" },

3⌄ { name: "Grace", team: "compilers" },

4⌄ { name: "Linus", team: "kernels" },

5⌄]

6⌄

7⌄const byTeam = Object.groupBy(people, (person) => person.team)

8⌄

9⌄console.log(byTeam)

10⌄

Saved 2 days ago

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All 6

nodejs5

react1

arrays1

dates2

hooks1

intl1

network1

Due date in 30 days

addDays, then format

nodejsdatesAdd tag

1⌄import { addDays, format } from "date-fns"

2⌄

3⌄const due = addDays(new Date(2026, 8, 28), 30)

4⌄

5⌄console.log(format(due, "EEEE, d MMMM"))

6⌄console.log(format(due, "yyyy-MM-dd"))

Saved 5 seconds ago

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Keep the Snippets worth keeping.

Save a Snippet JSpark+

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Export, always

Move to a new Mac JSpark+

Good to know

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