TypstDocumentation

json

Reads structured data from a JSON file.

The file must contain a valid JSON value, such as object or array. JSON objects will be converted into Typst dictionaries, and JSON arrays will be converted into Typst arrays. Strings and booleans will be converted into the Typst equivalents, null will be converted into none, and numbers will be converted to floats or integers depending on whether they are whole numbers.

Be aware that integers larger than 263-1 will be converted to floating point numbers, which may result in an approximative value.

The function returns a dictionary, an array or, depending on the JSON file, another JSON data type.

The JSON files in the example contain objects with the keys temperature, unit, and weather.

Example

#let forecast(day) = block[
  #box(square(
    width: 2cm,
    inset: 8pt,
    fill: if day.weather == "sunny" {
      yellow
    } else {
      aqua
    },
    align(
      bottom + right,
      strong(day.weather),
    ),
  ))
  #h(6pt)
  #set text(22pt, baseline: -8pt)
  #day.temperature °#day.unit
]

#forecast(json("monday.json"))
#forecast(json("tuesday.json"))
Preview

Parameters
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json(
str
) -> any

path
str
RequiredPositional
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Path to a JSON file.

Definitions
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decode

Reads structured data from a JSON string/bytes.

json.decode(
strbytes
) -> any

data
str or bytes
RequiredPositional
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JSON data.

encode

Encodes structured data into a JSON string.

json.encode(
any,pretty: bool,
) -> str

value
any
RequiredPositional
Question mark

Value to be encoded.

pretty
bool

Whether to pretty print the JSON with newlines and indentation.

Default: true