Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 1 Nov 2026. What's built · Install 0.2.0
jadpo
Reference: Built-in services

Standard types

FileType

On this page

A file's IANA media type, written image/png.

Web and network; not ordered; since Jadpo 0.1.0.

Make one

Pick one of its variants, FileType.png.

text.parse(raw, as: FileType) reads one from its text; text that isn't one at all fails malformed, such as png or image/tiff.

Variants

Variant Written
png image/png
jpeg image/jpeg
webp image/webp
pdf application/pdf
csv text/csv
tsv text/tab-separated-values
json application/json
json_lines application/jsonl

Text, JSON and storage

text.from writes its canonical text, the one form text.parse reads back. JSON sends its canonical text as a string.

Text JSON
image/png "image/png"
application/pdf "application/pdf"

It is stored in one column named for the field, of type text. application/pdf is stored as 'application/pdf'.

Shown to people

text.format(value, locale:) shows it to people in their locale.

With locale: Locale.en_gb:

Value Shown
image/png image/png
application/pdf application/pdf

Operations

It has the contract's own operations: text.parse, text.from, text.format, json.read, json.write and ==. It isn't ordered, so < and sorting don't take it. Every standard type meets one contract says how they work.

Markdown for agents: /docs/types/type-file-type.md.Built from Jadpo main at e00e61f.