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authorLeonid Logvinov <logvinov.leon@gmail.com>2017-08-30 17:12:28 +0800
committerLeonid Logvinov <logvinov.leon@gmail.com>2017-08-30 17:12:28 +0800
commit60ad5024ce697c043c55005ffee0ab5319fc6f45 (patch)
tree35ecb160b921eeb35207a002de14d5c83cb69543
parent5149fcdd74f85a452bb45510721bd7ab20de9f98 (diff)
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Add assert.isWeb3Provider
-rw-r--r--src/0x.ts1
-rw-r--r--src/utils/assert.ts4
2 files changed, 5 insertions, 0 deletions
diff --git a/src/0x.ts b/src/0x.ts
index 9613df1be..a395d6dd7 100644
--- a/src/0x.ts
+++ b/src/0x.ts
@@ -163,6 +163,7 @@ export class ZeroEx {
* @return An instance of the 0x.js ZeroEx class.
*/
constructor(provider: Web3Provider, config?: ZeroExConfig) {
+ assert.isWeb3Provider('provider', provider);
if (_.isUndefined((provider as any).sendAsync)) {
// Web3@1.0 provider doesn't support synchronous http requests,
// so it only has `send` method, instead of `send and `sendAsync` in web3@0.x.x
diff --git a/src/utils/assert.ts b/src/utils/assert.ts
index a26b19311..eb084129c 100644
--- a/src/utils/assert.ts
+++ b/src/utils/assert.ts
@@ -61,6 +61,10 @@ export const assert = {
isBoolean(variableName: string, value: boolean): void {
this.assert(_.isBoolean(value), this.typeAssertionMessage(variableName, 'boolean', value));
},
+ isWeb3Provider(variableName: string, value: Web3.Provider): void {
+ const isWeb3Provider = _.isFunction((value as any).send) || _.isFunction((value as any).sendAsync);
+ this.assert(isWeb3Provider, this.typeAssertionMessage(variableName, 'Web3.Provider', value));
+ },
doesConformToSchema(variableName: string, value: any, schema: Schema): void {
const schemaValidator = new SchemaValidator();
const validationResult = schemaValidator.validate(value, schema);