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import * as url from 'url'
import { fromHexString } from '@eth-optimism/core-utils'
export const validators = {
isBoolean: (val: any): boolean => {
return typeof val === 'boolean'
},
isString: (val: any): boolean => {
return typeof val === 'string'
},
isHexString: (val: any): boolean => {
return (
validators.isString(val) &&
val.startsWith('0x') &&
fromHexString(val).length === (val.length - 2) / 2
)
},
isAddress: (val: any): boolean => {
return validators.isHexString(val) && val.length === 42
},
isInteger: (val: any): boolean => {
return Number.isInteger(val)
},
isUrl: (val: any): boolean => {
try {
const parsed = new url.URL(val)
return (
parsed.protocol === 'ws:' ||
parsed.protocol === 'http:' ||
parsed.protocol === 'https:'
)
} catch (err) {
return false
}
},
isJsonRpcProvider: (val: any): boolean => {
return val && val.ready !== undefined
},
isLevelUP: (val: any): boolean => {
// TODO: Fix?
return val && val.db
},
}