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-rw-r--r--packages/react-docs/src/components/custom_enum.tsx34
1 files changed, 34 insertions, 0 deletions
diff --git a/packages/react-docs/src/components/custom_enum.tsx b/packages/react-docs/src/components/custom_enum.tsx
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index 000000000..1fe55eedc
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+++ b/packages/react-docs/src/components/custom_enum.tsx
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+import { logUtils } from '@0xproject/utils';
+import * as _ from 'lodash';
+import * as React from 'react';
+
+import { CustomType } from '../types';
+import { utils } from '../utils/utils';
+
+const STRING_ENUM_CODE_PREFIX = ' strEnum(';
+
+export interface CustomEnumProps {
+ type: CustomType;
+}
+
+// This component renders custom string enums that was a work-around for versions of
+// TypeScript <2.4.0 that did not support them natively. We keep it around to support
+// older versions of 0x.js <0.9.0
+export function CustomEnum(props: CustomEnumProps) {
+ const type = props.type;
+ if (!_.startsWith(type.defaultValue, STRING_ENUM_CODE_PREFIX)) {
+ logUtils.log('We do not yet support `Variable` types that are not strEnums');
+ return null;
+ }
+ // Remove the prefix and postfix, leaving only the strEnum values without quotes.
+ const enumValues = type.defaultValue.slice(10, -3).replace(/'/g, '');
+ return (
+ <span>
+ {`{`}
+ {'\t'}
+ {enumValues}
+ <br />
+ {`}`}
+ </span>
+ );
+}