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authorLeonid <logvinov.leon@gmail.com>2017-12-15 00:48:45 +0800
committerGitHub <noreply@github.com>2017-12-15 00:48:45 +0800
commita0aa21103b51ad287de1579832a4a490ca90175a (patch)
treed65274497474e65302a91e78efa1796558aa4380 /packages/utils/src
parentd69143487ec441939a85ef2a7e92bb0a15cb2e6c (diff)
parentce242b10e2c4d35bbba3842d198b78373dd609f0 (diff)
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Merge pull request #258 from 0xProject/feature/contracts-refactor
A bunch of refactorings
Diffstat (limited to 'packages/utils/src')
-rw-r--r--packages/utils/src/bignumber_config.ts11
-rw-r--r--packages/utils/src/class_utils.ts18
-rw-r--r--packages/utils/src/index.ts3
-rw-r--r--packages/utils/src/interval_utils.ts20
4 files changed, 52 insertions, 0 deletions
diff --git a/packages/utils/src/bignumber_config.ts b/packages/utils/src/bignumber_config.ts
new file mode 100644
index 000000000..2d5214e6f
--- /dev/null
+++ b/packages/utils/src/bignumber_config.ts
@@ -0,0 +1,11 @@
+import BigNumber from 'bignumber.js';
+
+export const bigNumberConfigs = {
+ configure() {
+ // By default BigNumber's `toString` method converts to exponential notation if the value has
+ // more then 20 digits. We want to avoid this behavior, so we set EXPONENTIAL_AT to a high number
+ BigNumber.config({
+ EXPONENTIAL_AT: 1000,
+ });
+ },
+};
diff --git a/packages/utils/src/class_utils.ts b/packages/utils/src/class_utils.ts
new file mode 100644
index 000000000..04e60ee57
--- /dev/null
+++ b/packages/utils/src/class_utils.ts
@@ -0,0 +1,18 @@
+import * as _ from 'lodash';
+
+export const classUtils = {
+ // This is useful for classes that have nested methods. Nested methods don't get bound out of the box.
+ bindAll(self: any, exclude: string[] = ['contructor'], thisArg?: any): void {
+ for (const key of Object.getOwnPropertyNames(self)) {
+ const val = self[key];
+ if (!_.includes(exclude, key)) {
+ if (_.isFunction(val)) {
+ self[key] = val.bind(thisArg || self);
+ } else if (_.isObject(val)) {
+ classUtils.bindAll(val, exclude, self);
+ }
+ }
+ }
+ return self;
+ },
+};
diff --git a/packages/utils/src/index.ts b/packages/utils/src/index.ts
index edfd192b2..403bc7236 100644
--- a/packages/utils/src/index.ts
+++ b/packages/utils/src/index.ts
@@ -1,2 +1,5 @@
export {promisify} from './promisify';
export {addressUtils} from './address_utils';
+export {classUtils} from './class_utils';
+export {intervalUtils} from './interval_utils';
+export {bigNumberConfigs} from './bignumber_config';
diff --git a/packages/utils/src/interval_utils.ts b/packages/utils/src/interval_utils.ts
new file mode 100644
index 000000000..62b79f2f5
--- /dev/null
+++ b/packages/utils/src/interval_utils.ts
@@ -0,0 +1,20 @@
+import * as _ from 'lodash';
+
+export const intervalUtils = {
+ setAsyncExcludingInterval(fn: () => Promise<void>, intervalMs: number) {
+ let locked = false;
+ const intervalId = setInterval(async () => {
+ if (locked) {
+ return;
+ } else {
+ locked = true;
+ await fn();
+ locked = false;
+ }
+ }, intervalMs);
+ return intervalId;
+ },
+ clearAsyncExcludingInterval(intervalId: NodeJS.Timer): void {
+ clearInterval(intervalId);
+ },
+};