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import { Ok, Error } from './gleam.mjs'
import { UnexpectedByte, UnexpectedEndOfInput } from './gleam/json.mjs'
export function json_to_string(json) {
return JSON.stringify(json)
}
export function object(entries) {
return Object.fromEntries(entries)
}
export function identity(x) {
return x
}
export function array(list) {
return list.toArray()
}
export function do_null() {
return null
}
export function decode(string) {
try {
const result = JSON.parse(string)
return new Ok(result)
} catch (err) {
return new Error(getJsonDecodeError(err))
}
}
function getJsonDecodeError(stdErr) {
if (isUnexpectedByte(stdErr)) return new toUnexpectedByteError(stdErr)
if (isUnexpectedEndOfInput(stdErr)) return new UnexpectedEndOfInput()
return new UnexpectedByte('', 0)
}
function isUnexpectedEndOfInput(err) {
return err.message.includes('Unexpected end') || err.message.includes('Unexpected EOF')
}
const unexpectedByteRegex = /Unexpected token (.) in JSON at position (\d+)/
function isUnexpectedByte(err) {
return unexpectedByteRegex.test(err)
}
function toUnexpectedByteError(err) {
const match = unexpectedByteRegex.exec(err.message)
const byte = "0x" + match[1].charCodeAt(0).toString(16).toUpperCase()
const position = Number(match[2])
return new UnexpectedByte(byte, position)
}
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