83 lines
2.5 KiB
TypeScript
83 lines
2.5 KiB
TypeScript
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import getTypeOf, { JSType } from "./getTypeOf";
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import { errorOrPromise } from "./utils/filter";
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import flattenArray from "./utils/flattenArray";
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import { JsonSchema, JsonPointer, JsonError, isJsonError } from "./types";
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import { Draft } from "./draft";
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import equal from "fast-deep-equal";
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function getJsonSchemaType(value: unknown, expectedType: string | string[]): JSType | "integer" {
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const jsType = getTypeOf(value);
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if (
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jsType === "number" &&
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(expectedType === "integer" ||
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(Array.isArray(expectedType) && expectedType.includes("integer")))
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) {
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return Number.isInteger(value) || isNaN(value as any) ? "integer" : "number";
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}
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return jsType;
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}
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/**
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* Validates data with json schema
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*
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* @param draft - validator
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* @param value - value to validate
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* @param [schema] - json schema, defaults to rootSchema
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* @param [pointer] - json pointer pointing to value (used for error-messages only)
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* @return list of errors or empty
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*/
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export default function validate(
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draft: Draft,
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value: unknown,
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schema: JsonSchema = draft.rootSchema,
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pointer: JsonPointer = "#"
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): Array<JsonError> {
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schema = draft.resolveRef(schema);
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// @draft >= 07
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if (getTypeOf(schema) === "boolean") {
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if (schema) {
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return [];
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}
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return [draft.errors.invalidDataError({ pointer, schema, value })];
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}
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if (isJsonError(schema)) {
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return [schema as JsonError];
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}
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// @draft >= 6 const
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if (schema.const !== undefined) {
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if (equal(schema.const, value)) {
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return [];
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}
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return [draft.errors.constError({ pointer, schema, value, expected: schema.const })];
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}
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const receivedType = getJsonSchemaType(value, schema.type);
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const expectedType = schema.type || receivedType;
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if (
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receivedType !== expectedType &&
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(!Array.isArray(expectedType) || !expectedType.includes(receivedType))
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) {
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return [
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draft.errors.typeError({
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pointer,
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schema,
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value,
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received: receivedType,
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expected: expectedType
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})
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];
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}
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if (draft.validateType[receivedType] == null) {
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return [draft.errors.invalidTypeError({ pointer, schema, value, receivedType })];
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}
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// get type validation results
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const errors = flattenArray(draft.validateType[receivedType](draft, schema, value, pointer));
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return errors.filter(errorOrPromise) as JsonError[]; // ignore promises here
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}
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