diff options
| -rw-r--r-- | src/validators.js | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/validators.js b/src/validators.js index 2c3bd8e6..0300f629 100644 --- a/src/validators.js +++ b/src/validators.js @@ -196,9 +196,14 @@ export function is(...values) { }; } + const joiner = + (Array.from(values).some(v => typeof v === 'string' && v.includes(' ')) + ? ', ' + : ' '); + const fn = (value) => { if (!values.has(value)) { - throw new TypeError(`Expected one of ${Array.from(values).join(' ')}, got ${value}`); + throw new TypeError(`Expected one of ${Array.from(values).join(joiner)}, got ${value}`); } return true; |