Merge development

1 files changed, 53 insertions, 0 deletions

diff --git a/packages/pipeline/src/utils/index.ts b/packages/pipeline/src/utils/index.ts
new file mode 100644
index 000000000..094c0178e
--- /dev/null
+++ b/packages/pipeline/src/utils/index.ts
@@ -0,0 +1,53 @@
+import { BigNumber } from '@0x/utils';
+export * from './transformers';
+export * from './constants';
+
+/**
+ * If the given BigNumber is not null, returns the string representation of that
+ * number. Otherwise, returns null.
+ * @param n The number to convert.
+ */
+export function bigNumbertoStringOrNull(n: BigNumber): string | null {
+    if (n == null) {
+        return null;
+    }
+    return n.toString();
+}
+
+/**
+ * If value is null or undefined, returns null. Otherwise converts value to a
+ * BigNumber.
+ * @param value A string or number to be converted to a BigNumber
+ */
+export function toBigNumberOrNull(value: string | number | null): BigNumber | null {
+    switch (value) {
+        case null:
+        case undefined:
+            return null;
+        default:
+            return new BigNumber(value);
+    }
+}
+
+/**
+ * Logs an error by intelligently checking for `message` and `stack` properties.
+ * Intended for use with top-level immediately invoked asynchronous functions.
+ * @param e the error to log.
+ */
+export function handleError(e: any): void {
+    if (e.message != null) {
+        // tslint:disable-next-line:no-console
+        console.error(e.message);
+    } else {
+        // tslint:disable-next-line:no-console
+        console.error('Unknown error');
+    }
+    if (e.stack != null) {
+        // tslint:disable-next-line:no-console
+        console.error(e.stack);
+    } else {
+        // tslint:disable-next-line:no-console
+        console.error('(No stack trace)');
+    }
+    process.exit(1);
+}