24 lines
765 B
TypeScript
24 lines
765 B
TypeScript
export const invalidCharError = {
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valid: false,
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error: 'contains invalid characters'
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};
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export const validationSuccess = { valid: true, error: null };
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export const usernameTooShort = { valid: false, error: 'is too short' };
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export const usernameIsHttpStatusCode = {
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valid: false,
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error: 'is a reserved error code'
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};
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const validCharsRE = /^[a-zA-Z0-9\-_+]*$/;
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export const isHttpStatusCode = (str: string) => {
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const output = parseInt(str, 10);
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return !isNaN(output) && output >= 100 && output <= 599;
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};
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export const isValidUsername = (str: string) => {
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if (!validCharsRE.test(str)) return invalidCharError;
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if (str.length < 3) return usernameTooShort;
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if (isHttpStatusCode(str)) return usernameIsHttpStatusCode;
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return validationSuccess;
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};
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