What is the best way to pass an array of values into unknownFormats

[phillim1]

This is more of a query than an issue.

The following command called from Powershell works fine and returns errors for unknown formats: ajv validate -d data.json -s schema.json --unknown-formats ignore --verbose --errors text --all-errors

To ignore specific formats the following command also works fine (after trying many different variations to pass multiple values for the unknown-formats parameter): ajv validate -d data.json -s schema.json --unknown-formats="int32" --unknown-formats="double" --verbose --errors text --all-errors

Is there a better way to pass in the additional formats in the unknown-formats parameter without repeating --unknown-formats?

[epoberezkin]

Just checked minimist docs - doesn't seem like it supports another way of passing arrays...

I can suggest creating a JS file with ~~empty~~ always valid format definitions for the formats you want to ignore and pass it to -c option:

const unknownFormats = ["int32", "double"]

module.exports = (ajv) => {
  for (const f of unknownFormats) ajv.addFormat(f, () => true)
  return ajv
}
// or `/.*/` can be used as format that should be ignored
// ajv v7 also supports just `true` to achieve the same in a slightly more performant way
// - it does not generate any code for formats defined as `true`

Also, given that unknown-formats option is removed from ajv v7, this will be the only way to define ignored formats once ajv-cli catches up with v7.

It would be good to add it to the docs - PR is welcome.