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-rw-r--r--packages/assert/src/index.ts4
1 files changed, 2 insertions, 2 deletions
diff --git a/packages/assert/src/index.ts b/packages/assert/src/index.ts
index 95c7b658b..8e18416c5 100644
--- a/packages/assert/src/index.ts
+++ b/packages/assert/src/index.ts
@@ -41,8 +41,8 @@ export const assert = {
value: string,
stringEnum: any /* There is no base type for every string enum */,
): void {
- const doesBelongToStringEnum = !_.isUndefined(stringEnum[value]);
- const enumValues = _.keys(stringEnum);
+ const enumValues = _.values(stringEnum);
+ const doesBelongToStringEnum = _.includes(enumValues, value);
const enumValuesAsStrings = _.map(enumValues, enumValue => `'${enumValue}'`);
const enumValuesAsString = enumValuesAsStrings.join(', ');
assert.assert(