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@earendil-works/pi-schema compiles JSON Schema (drafts 2020-12 and 7) once into plain closures: no eval or new Function, so it runs under a strict CSP. It passes 2,222 of the 2,223 core tests of the official JSON-Schema-Test-Suite, checks Chord-style argument schemas within 1.2x of TypeBox's JIT, and keeps 3,200 compiled schemas in 7.9 MB (TypeBox: 54.7 MB). - compile(schema, options) returns a Validator: check() is the boolean check (a type guard for builder schemas), errors() reports each failure with a JSON Pointer path, missing and unknown fields at the field. - Builders (str, int, obj, opt, union, ...) return plain JSON Schema typed with the values it accepts (Static<typeof schema>). - Formats are an optional entry point (./formats), adapted from TypeBox (MIT). - Tests run the vendored suite (drafts 2020-12 and 7, with optional and format tests); npm run bench compares conformance, speed, setup cost, memory and bundle size with TypeBox, @cfworker/json-schema and omptype.
51 lines
2.8 KiB
TypeScript
51 lines
2.8 KiB
TypeScript
// The official JSON-Schema-Test-Suite, drafts 2020-12 and 7: every test, including optional and format tests.
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// A test listed in KNOWN_FAILURES must fail; when one starts passing, remove it from the list.
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import { describe, expect, it } from "vitest";
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import { formats } from "../src/formats/index.ts";
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import { compile } from "../src/index.ts";
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import { suiteFiles, suiteSchemas } from "./suite.ts";
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const KNOWN_FAILURES = new Set([
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// Vocabularies switched off by a custom meta-schema are not supported.
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"draft2020-12/vocabulary > schema that uses custom metaschema with with no validation vocabulary > no validation: invalid number, but it still validates",
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"draft2020-12/optional/format-assertion > schema that uses custom metaschema with format-assertion: false > format-assertion: false: invalid string",
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"draft2020-12/optional/format-assertion > schema that uses custom metaschema with format-assertion: true > format-assertion: true: invalid string",
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// A $ref to a document of another draft is evaluated with the compile's draft.
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"draft2020-12/optional/cross-draft > refs to historic drafts are processed as historic drafts > first item not a string is valid",
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"draft7/optional/cross-draft > refs to future drafts are processed as future drafts > missing bar is invalid",
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// contentMediaType and contentEncoding are annotations.
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"draft7/optional/content > validation of string-encoded content based on media type > an invalid JSON document",
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"draft7/optional/content > validation of binary string-encoding > an invalid base64 string (% is not a valid character)",
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"draft7/optional/content > validation of binary-encoded media type documents > a validly-encoded invalid JSON document",
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"draft7/optional/content > validation of binary-encoded media type documents > an invalid base64 string that is valid JSON",
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]);
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const schemas = suiteSchemas();
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for (const file of suiteFiles()) {
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// Format tests assert formats; everywhere else `format` is an annotation, as draft 2020-12 specifies.
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const options = {
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draft: file.draft,
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schemas,
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formats: file.name.includes("/optional/format/") ? formats : undefined,
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};
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describe(file.name, () => {
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for (const group of file.groups) {
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describe(group.description, () => {
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for (const test of group.tests) {
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const known = KNOWN_FAILURES.has(`${file.name} > ${group.description} > ${test.description}`);
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(known ? it.fails : it)(test.description, () => {
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const validator = compile(group.schema, options);
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expect(validator.check(test.data)).toBe(test.valid);
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});
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it(`${test.description} (errors agree with check)`, () => {
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const validator = compile(group.schema, options);
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const errors = validator.errors(test.data);
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expect(errors.length === 0).toBe(validator.check(test.data));
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});
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}
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});
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}
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});
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}
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