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176
my-app/node_modules/ajv/lib/runtime/parseJson.ts
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176
my-app/node_modules/ajv/lib/runtime/parseJson.ts
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const rxParseJson = /position\s(\d+)$/
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export function parseJson(s: string, pos: number): unknown {
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let endPos: number | undefined
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parseJson.message = undefined
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let matches: RegExpExecArray | null
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if (pos) s = s.slice(pos)
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try {
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parseJson.position = pos + s.length
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return JSON.parse(s)
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} catch (e) {
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matches = rxParseJson.exec((e as Error).message)
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if (!matches) {
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parseJson.message = "unexpected end"
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return undefined
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}
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endPos = +matches[1]
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const c = s[endPos]
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s = s.slice(0, endPos)
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parseJson.position = pos + endPos
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try {
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return JSON.parse(s)
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} catch (e1) {
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parseJson.message = `unexpected token ${c}`
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return undefined
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}
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}
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}
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parseJson.message = undefined as string | undefined
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parseJson.position = 0 as number
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parseJson.code = 'require("ajv/dist/runtime/parseJson").parseJson'
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export function parseJsonNumber(s: string, pos: number, maxDigits?: number): number | undefined {
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let numStr = ""
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let c: string
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parseJsonNumber.message = undefined
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if (s[pos] === "-") {
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numStr += "-"
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pos++
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}
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if (s[pos] === "0") {
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numStr += "0"
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pos++
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} else {
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if (!parseDigits(maxDigits)) {
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errorMessage()
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return undefined
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}
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}
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if (maxDigits) {
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parseJsonNumber.position = pos
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return +numStr
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}
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if (s[pos] === ".") {
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numStr += "."
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pos++
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if (!parseDigits()) {
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errorMessage()
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return undefined
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}
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}
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if (((c = s[pos]), c === "e" || c === "E")) {
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numStr += "e"
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pos++
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if (((c = s[pos]), c === "+" || c === "-")) {
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numStr += c
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pos++
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}
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if (!parseDigits()) {
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errorMessage()
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return undefined
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}
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}
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parseJsonNumber.position = pos
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return +numStr
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function parseDigits(maxLen?: number): boolean {
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let digit = false
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while (((c = s[pos]), c >= "0" && c <= "9" && (maxLen === undefined || maxLen-- > 0))) {
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digit = true
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numStr += c
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pos++
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}
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return digit
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}
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function errorMessage(): void {
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parseJsonNumber.position = pos
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parseJsonNumber.message = pos < s.length ? `unexpected token ${s[pos]}` : "unexpected end"
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}
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}
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parseJsonNumber.message = undefined as string | undefined
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parseJsonNumber.position = 0 as number
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parseJsonNumber.code = 'require("ajv/dist/runtime/parseJson").parseJsonNumber'
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const escapedChars: {[X in string]?: string} = {
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b: "\b",
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f: "\f",
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n: "\n",
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r: "\r",
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t: "\t",
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'"': '"',
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"/": "/",
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"\\": "\\",
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}
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const CODE_A: number = "a".charCodeAt(0)
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const CODE_0: number = "0".charCodeAt(0)
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export function parseJsonString(s: string, pos: number): string | undefined {
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let str = ""
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let c: string | undefined
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parseJsonString.message = undefined
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// eslint-disable-next-line no-constant-condition, @typescript-eslint/no-unnecessary-condition
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while (true) {
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c = s[pos++]
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if (c === '"') break
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if (c === "\\") {
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c = s[pos]
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if (c in escapedChars) {
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str += escapedChars[c]
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pos++
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} else if (c === "u") {
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pos++
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let count = 4
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let code = 0
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while (count--) {
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code <<= 4
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c = s[pos]
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if (c === undefined) {
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errorMessage("unexpected end")
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return undefined
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}
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c = c.toLowerCase()
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if (c >= "a" && c <= "f") {
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code += c.charCodeAt(0) - CODE_A + 10
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} else if (c >= "0" && c <= "9") {
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code += c.charCodeAt(0) - CODE_0
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} else {
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errorMessage(`unexpected token ${c}`)
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return undefined
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}
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pos++
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}
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str += String.fromCharCode(code)
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} else {
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errorMessage(`unexpected token ${c}`)
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return undefined
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}
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// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
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} else if (c === undefined) {
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errorMessage("unexpected end")
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return undefined
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} else {
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if (c.charCodeAt(0) >= 0x20) {
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str += c
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} else {
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errorMessage(`unexpected token ${c}`)
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return undefined
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}
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}
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}
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parseJsonString.position = pos
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return str
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function errorMessage(msg: string): void {
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parseJsonString.position = pos
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parseJsonString.message = msg
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}
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}
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parseJsonString.message = undefined as string | undefined
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parseJsonString.position = 0 as number
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parseJsonString.code = 'require("ajv/dist/runtime/parseJson").parseJsonString'
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