4 files changed, 138 insertions, 0 deletions
diff --git a/packages/json-schemas/src/globals.d.ts b/packages/json-schemas/src/globals.d.ts
new file mode 100644
index 000000000..157705f57
--- /dev/null
+++ b/packages/json-schemas/src/globals.d.ts
@@ -0,0 +1,7 @@
+declare module 'dirty-chai';
+
+// es6-promisify declarations
+declare function promisify(original: any, settings?: any): ((...arg: any[]) => Promise<any>);
+declare module 'es6-promisify' {
+    export = promisify;
+}
diff --git a/packages/json-schemas/src/index.ts b/packages/json-schemas/src/index.ts
new file mode 100644
index 000000000..b7cae277e
--- /dev/null
+++ b/packages/json-schemas/src/index.ts
@@ -0,0 +1,4 @@
+export {ValidatorResult, Schema} from 'jsonschema';
+
+export {SchemaValidator} from './schema_validator';
+export {schemas} from './schemas';
diff --git a/packages/json-schemas/src/schema_validator.ts b/packages/json-schemas/src/schema_validator.ts
new file mode 100644
index 000000000..0bc88cc45
--- /dev/null
+++ b/packages/json-schemas/src/schema_validator.ts
@@ -0,0 +1,28 @@
+import values = require('lodash.values');
+import {Validator, ValidatorResult, Schema} from 'jsonschema';
+import {schemas} from './schemas';
+
+export class SchemaValidator {
+    private validator: Validator;
+    constructor() {
+        this.validator = new Validator();
+        for (const schema of values(schemas)) {
+            this.validator.addSchema(schema, schema.id);
+        }
+    }
+    public addSchema(schema: Schema) {
+        this.validator.addSchema(schema, schema.id);
+    }
+    // In order to validate a complex JS object using jsonschema, we must replace any complex
+    // sub-types (e.g BigNumber) with a simpler string representation. Since BigNumber and other
+    // complex types implement the `toString` method, we can stringify the object and
+    // then parse it. The resultant object can then be checked using jsonschema.
+    public validate(instance: any, schema: Schema): ValidatorResult {
+        const jsonSchemaCompatibleObject = JSON.parse(JSON.stringify(instance));
+        return this.validator.validate(jsonSchemaCompatibleObject, schema);
+    }
+    public isValid(instance: any, schema: Schema): boolean {
+        const isValid = this.validate(instance, schema).errors.length === 0;
+        return isValid;
+    }
+}
diff --git a/packages/json-schemas/src/schemas.ts b/packages/json-schemas/src/schemas.ts
new file mode 100644
index 000000000..a8e5ecbcb
--- /dev/null
+++ b/packages/json-schemas/src/schemas.ts
@@ -0,0 +1,99 @@
+import {
+    numberSchema,
+    addressSchema,
+} from '../schemas/basic_type_schemas';
+import {
+    ecSignatureSchema,
+    ecSignatureParameterSchema,
+} from '../schemas/ec_signature_schema';
+import {
+    indexFilterValuesSchema,
+} from '../schemas/index_filter_values_schema';
+import {
+    orderCancellationRequestsSchema,
+} from '../schemas/order_cancel_schema';
+import {
+    orderFillOrKillRequestsSchema,
+} from '../schemas/order_fill_or_kill_requests_schema';
+import {
+    orderFillRequestsSchema,
+} from '../schemas/order_fill_requests_schema';
+import {
+    orderHashSchema,
+} from '../schemas/order_hash_schema';
+import {
+    orderSchema,
+    signedOrderSchema,
+} from '../schemas/order_schemas';
+import {
+    blockParamSchema,
+    subscriptionOptsSchema,
+} from '../schemas/subscription_opts_schema';
+import {
+    tokenSchema,
+} from '../schemas/token_schema';
+import {
+    signedOrdersSchema,
+} from '../schemas/signed_orders_schema';
+import {
+    relayerApiErrorResponseSchema,
+} from '../schemas/relayer_api_error_response_schema';
+import {
+    relayerApiFeesResponseSchema,
+} from '../schemas/relayer_api_fees_response_schema';
+import {
+    relayerApiFeesPayloadSchema,
+} from '../schemas/relayer_api_fees_payload_schema';
+import {
+    relayerApiOrderBookResponseSchema,
+} from '../schemas/relayer_api_orderbook_response_schema';
+import {
+    relayerApiTokenPairsResponseSchema,
+    relayerApiTokenTradeInfoSchema,
+} from '../schemas/relayer_api_token_pairs_response_schema';
+import {
+    jsNumber,
+    txDataSchema,
+} from '../schemas/tx_data_schema';
+import {
+    relayerApiOrderbookChannelSubscribeSchema,
+    relayerApiOrderbookChannelSubscribePayload,
+} from '../schemas/relayer_api_orberbook_channel_subscribe_schema';
+import {
+    relayerApiOrderbookChannelUpdateSchema,
+} from '../schemas/relayer_api_orderbook_channel_update_response_schema';
+import {
+    relayerApiOrderbookChannelSnapshotSchema,
+    relayerApiOrderbookChannelSnapshotPayload,
+} from '../schemas/relayer_api_orderbook_channel_snapshot_schema';
+
+export const schemas = {
+    numberSchema,
+    addressSchema,
+    ecSignatureSchema,
+    ecSignatureParameterSchema,
+    indexFilterValuesSchema,
+    orderCancellationRequestsSchema,
+    orderFillOrKillRequestsSchema,
+    orderFillRequestsSchema,
+    orderHashSchema,
+    orderSchema,
+    signedOrderSchema,
+    signedOrdersSchema,
+    blockParamSchema,
+    subscriptionOptsSchema,
+    tokenSchema,
+    jsNumber,
+    txDataSchema,
+    relayerApiErrorResponseSchema,
+    relayerApiFeesPayloadSchema,
+    relayerApiFeesResponseSchema,
+    relayerApiOrderBookResponseSchema,
+    relayerApiTokenPairsResponseSchema,
+    relayerApiTokenTradeInfoSchema,
+    relayerApiOrderbookChannelSubscribeSchema,
+    relayerApiOrderbookChannelSubscribePayload,
+    relayerApiOrderbookChannelUpdateSchema,
+    relayerApiOrderbookChannelSnapshotSchema,
+    relayerApiOrderbookChannelSnapshotPayload,
+};