strictSchema: "log" throws on some schema compile errors

[chris48s]

Quick description of the issue

In

ajv/lib/vocabularies/format/format.ts

Lines 82 to 87 in 82735a1

	function unknownFormat(): void {
	if (opts.strictSchema === false) {
	self.logger.warn(unknownMsg())
	return
	}
	throw new Error(unknownMsg())

strictSchema === false logs an error, whereas strictSchema === "log" throws

Based on the docs in

ajv/docs/options.md

Lines 96 to 104 in 82735a1

	### strictSchema
	Prevent unknown keywords, formats etc. (see [Strict schema](./strict-mode.md#strict-schema))
	Option values:
	- `true` (default) - throw an exception when any strict schema restriction is violated.
	- `"log"` - log warning when any strict schema restriction is violated.
	- `false` - ignore all strict schema violations.

I would expect strictSchema === "log" to log and strictSchema === true to throw.

Issue template

What version of Ajv are you using? Does the issue happen if you use the latest version?

8.17.1
Yes

Ajv options object

{ strictSchema: "log" }

JSON Schema

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://json.schemastore.org/ruff.json",
  "title": "Options",
  "type": "object",
  "properties": {
    "Flake8CopyrightOptions": {
      "description": "Options for the `flake8-copyright` plugin.",
      "type": "object",
      "properties": {
        "min-file-size": {
          "description": "A minimum file size (in bytes) required for a copyright notice to be enforced. By default, all files are validated.",
          "type": [
            "integer",
            "null"
          ],
          "format": "uint",
          "minimum": 0
        }
      }
    }
  }
}

Sample data

irrelevant

Your code

import Ajv from "ajv";

const ajv = new Ajv({ allErrors: true, strictSchema: "log" });

const schema = {
  $schema: "http://json-schema.org/draft-07/schema#",
  $id: "https://json.schemastore.org/ruff.json",
  title: "Options",
  type: "object",
  properties: {
    Flake8CopyrightOptions: {
      description: "Options for the `flake8-copyright` plugin.",
      type: "object",
      properties: {
        "min-file-size": {
          description:
            "A minimum file size (in bytes) required for a copyright notice to be enforced. By default, all files are validated.",
          type: ["integer", "null"],
          format: "uint",
          minimum: 0,
        },
      },
    },
  },
};

const validate = ajv.compile(schema);

const data = {
  foo: 1,
  bar: "abc",
}; // this doesn't matter

validate(data);
console.log(validate.errors);

Validation result, data AFTER validation, error messages

                throw new Error(unknownMsg());
                      ^
Error: unknown format "uint" ignored in schema at path "#/properties/Flake8CopyrightOptions/properties/min-file-size"

What results did you expect?

With { strictSchema: "log" }, I would expect this error to be logged (like it is when strictSchema is false), not thrown as an exception.

Are you going to resolve the issue?

I have not contributed before, but I would be happy to try and submit a PR if you agree this is a bug.

[mpal15]

Hi, can you assign to me .i want to try to solve this problem