特定值或特定值列表的 Joi 验证正则表达式

Question

I am converting CSV to JSON and I need to validate a cell value. Having a list of possible valid values ['abc', 'def', 'ref', 'rop'] . I want to write a regex assuming a valid cell would be either

1. one value from the above list (eg validValue='abc' notValidValue='adr' ) or
2. multiple values from the above list separated by \\\ (eg validValue='abc \\\ ref \\\ def' notValidValue='aef \\\ kop' )

I tried with Joi.string().regex(/(?:abc|def|ref|rop)(/s\\\\\\/s(?:abc|def|ref|rop))?/) but it throws eeror for first /s -> invalid character and also Argument of type RegExp is not assignable to parameter of type 'string | StringRegexOptions'.... Argument of type RegExp is not assignable to parameter of type 'string | StringRegexOptions'....

Answer 1

You have typo. The /s should be \s . And the tail ? will match the second part 0 or once. Change it to * can match as many time as it will. or you want to specify the maximum {0,3} .

regex(/(?:abc|def|ref|rop)(\s\\\\\\\s(?:abc|def|ref|rop))*/)