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opencode/packages/util/package.json

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+{
+  "name": "@opencode-ai/util",
+  "version": "1.1.53",
+  "private": true,
+  "type": "module",
+  "license": "MIT",
+  "exports": {
+    "./*": "./src/*.ts"
+  },
+  "scripts": {
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "zod": "catalog:"
+  },
+  "devDependencies": {
+    "typescript": "catalog:",
+    "@types/bun": "catalog:"
+  }
+}

opencode/packages/util/src/array.ts

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+export function findLast<T>(
+  items: readonly T[],
+  predicate: (item: T, index: number, items: readonly T[]) => boolean,
+): T | undefined {
+  for (let i = items.length - 1; i >= 0; i -= 1) {
+    const item = items[i]
+    if (predicate(item, i, items)) return item
+  }
+  return undefined
+}

opencode/packages/util/src/binary.ts

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+export namespace Binary {
+  export function search<T>(array: T[], id: string, compare: (item: T) => string): { found: boolean; index: number } {
+    let left = 0
+    let right = array.length - 1
+
+    while (left <= right) {
+      const mid = Math.floor((left + right) / 2)
+      const midId = compare(array[mid])
+
+      if (midId === id) {
+        return { found: true, index: mid }
+      } else if (midId < id) {
+        left = mid + 1
+      } else {
+        right = mid - 1
+      }
+    }
+
+    return { found: false, index: left }
+  }
+
+  export function insert<T>(array: T[], item: T, compare: (item: T) => string): T[] {
+    const id = compare(item)
+    let left = 0
+    let right = array.length
+
+    while (left < right) {
+      const mid = Math.floor((left + right) / 2)
+      const midId = compare(array[mid])
+
+      if (midId < id) {
+        left = mid + 1
+      } else {
+        right = mid
+      }
+    }
+
+    array.splice(left, 0, item)
+    return array
+  }
+}

opencode/packages/util/src/encode.ts

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+export function base64Encode(value: string) {
+  const bytes = new TextEncoder().encode(value)
+  const binary = Array.from(bytes, (b) => String.fromCharCode(b)).join("")
+  return btoa(binary).replace(/\+/g, "-").replace(/\//g, "_").replace(/=/g, "")
+}
+
+export function base64Decode(value: string) {
+  const binary = atob(value.replace(/-/g, "+").replace(/_/g, "/"))
+  const bytes = Uint8Array.from(binary, (c) => c.charCodeAt(0))
+  return new TextDecoder().decode(bytes)
+}
+
+export async function hash(content: string, algorithm = "SHA-256"): Promise<string> {
+  const encoder = new TextEncoder()
+  const data = encoder.encode(content)
+  const hashBuffer = await crypto.subtle.digest(algorithm, data)
+  const hashArray = Array.from(new Uint8Array(hashBuffer))
+  const hashHex = hashArray.map((b) => b.toString(16).padStart(2, "0")).join("")
+  return hashHex
+}
+
+export function checksum(content: string): string | undefined {
+  if (!content) return undefined
+  let hash = 0x811c9dc5
+  for (let i = 0; i < content.length; i++) {
+    hash ^= content.charCodeAt(i)
+    hash = Math.imul(hash, 0x01000193)
+  }
+  return (hash >>> 0).toString(36)
+}

opencode/packages/util/src/error.ts

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+import z from "zod"
+
+export abstract class NamedError extends Error {
+  abstract schema(): z.core.$ZodType
+  abstract toObject(): { name: string; data: any }
+
+  static create<Name extends string, Data extends z.core.$ZodType>(name: Name, data: Data) {
+    const schema = z
+      .object({
+        name: z.literal(name),
+        data,
+      })
+      .meta({
+        ref: name,
+      })
+    const result = class extends NamedError {
+      public static readonly Schema = schema
+
+      public override readonly name = name as Name
+
+      constructor(
+        public readonly data: z.input<Data>,
+        options?: ErrorOptions,
+      ) {
+        super(name, options)
+        this.name = name
+      }
+
+      static isInstance(input: any): input is InstanceType<typeof result> {
+        return typeof input === "object" && "name" in input && input.name === name
+      }
+
+      schema() {
+        return schema
+      }
+
+      toObject() {
+        return {
+          name: name,
+          data: this.data,
+        }
+      }
+    }
+    Object.defineProperty(result, "name", { value: name })
+    return result
+  }
+
+  public static readonly Unknown = NamedError.create(
+    "UnknownError",
+    z.object({
+      message: z.string(),
+    }),
+  )
+}

opencode/packages/util/src/fn.ts

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+import { z } from "zod"
+
+export function fn<T extends z.ZodType, Result>(schema: T, cb: (input: z.infer<T>) => Result) {
+  const result = (input: z.infer<T>) => {
+    const parsed = schema.parse(input)
+    return cb(parsed)
+  }
+  result.force = (input: z.infer<T>) => cb(input)
+  result.schema = schema
+  return result
+}

opencode/packages/util/src/identifier.ts

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+import { randomBytes } from "crypto"
+
+export namespace Identifier {
+  const LENGTH = 26
+
+  // State for monotonic ID generation
+  let lastTimestamp = 0
+  let counter = 0
+
+  export function ascending() {
+    return create(false)
+  }
+
+  export function descending() {
+    return create(true)
+  }
+
+  function randomBase62(length: number): string {
+    const chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+    let result = ""
+    const bytes = randomBytes(length)
+    for (let i = 0; i < length; i++) {
+      result += chars[bytes[i] % 62]
+    }
+    return result
+  }
+
+  export function create(descending: boolean, timestamp?: number): string {
+    const currentTimestamp = timestamp ?? Date.now()
+
+    if (currentTimestamp !== lastTimestamp) {
+      lastTimestamp = currentTimestamp
+      counter = 0
+    }
+    counter++
+
+    let now = BigInt(currentTimestamp) * BigInt(0x1000) + BigInt(counter)
+
+    now = descending ? ~now : now
+
+    const timeBytes = Buffer.alloc(6)
+    for (let i = 0; i < 6; i++) {
+      timeBytes[i] = Number((now >> BigInt(40 - 8 * i)) & BigInt(0xff))
+    }
+
+    return timeBytes.toString("hex") + randomBase62(LENGTH - 12)
+  }
+}

opencode/packages/util/src/iife.ts

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+export function iife<T>(fn: () => T) {
+  return fn()
+}

opencode/packages/util/src/lazy.ts

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+export function lazy<T>(fn: () => T) {
+  let value: T | undefined
+  let loaded = false
+
+  return (): T => {
+    if (loaded) return value as T
+    loaded = true
+    value = fn()
+    return value as T
+  }
+}

opencode/packages/util/src/path.ts

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+export function getFilename(path: string | undefined) {
+  if (!path) return ""
+  const trimmed = path.replace(/[\/\\]+$/, "")
+  const parts = trimmed.split(/[\/\\]/)
+  return parts[parts.length - 1] ?? ""
+}
+
+export function getDirectory(path: string | undefined) {
+  if (!path) return ""
+  const trimmed = path.replace(/[\/\\]+$/, "")
+  const parts = trimmed.split(/[\/\\]/)
+  return parts.slice(0, parts.length - 1).join("/") + "/"
+}
+
+export function getFileExtension(path: string | undefined) {
+  if (!path) return ""
+  const parts = path.split(".")
+  return parts[parts.length - 1]
+}
+
+export function getFilenameTruncated(path: string | undefined, maxLength: number = 20) {
+  const filename = getFilename(path)
+  if (filename.length <= maxLength) return filename
+  const lastDot = filename.lastIndexOf(".")
+  const ext = lastDot <= 0 ? "" : filename.slice(lastDot)
+  const available = maxLength - ext.length - 1 // -1 for ellipsis
+  if (available <= 0) return filename.slice(0, maxLength - 1) + "…"
+  return filename.slice(0, available) + "…" + ext
+}
+
+export function truncateMiddle(text: string, maxLength: number = 20) {
+  if (text.length <= maxLength) return text
+  const available = maxLength - 1 // -1 for ellipsis
+  const start = Math.ceil(available / 2)
+  const end = Math.floor(available / 2)
+  return text.slice(0, start) + "…" + text.slice(-end)
+}

opencode/packages/util/src/retry.ts

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+export interface RetryOptions {
+  attempts?: number
+  delay?: number
+  factor?: number
+  maxDelay?: number
+  retryIf?: (error: unknown) => boolean
+}
+
+const TRANSIENT_MESSAGES = [
+  "load failed",
+  "network connection was lost",
+  "network request failed",
+  "failed to fetch",
+  "econnreset",
+  "econnrefused",
+  "etimedout",
+  "socket hang up",
+]
+
+function isTransientError(error: unknown): boolean {
+  if (!error) return false
+  const message = String(error instanceof Error ? error.message : error).toLowerCase()
+  return TRANSIENT_MESSAGES.some((m) => message.includes(m))
+}
+
+export async function retry<T>(fn: () => Promise<T>, options: RetryOptions = {}): Promise<T> {
+  const { attempts = 3, delay = 500, factor = 2, maxDelay = 10000, retryIf = isTransientError } = options
+
+  let lastError: unknown
+  for (let attempt = 0; attempt < attempts; attempt++) {
+    try {
+      return await fn()
+    } catch (error) {
+      lastError = error
+      if (attempt === attempts - 1 || !retryIf(error)) throw error
+      const wait = Math.min(delay * Math.pow(factor, attempt), maxDelay)
+      await new Promise((resolve) => setTimeout(resolve, wait))
+    }
+  }
+  throw lastError
+}

opencode/packages/util/src/slug.ts

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+export namespace Slug {
+  const ADJECTIVES = [
+    "brave",
+    "calm",
+    "clever",
+    "cosmic",
+    "crisp",
+    "curious",
+    "eager",
+    "gentle",
+    "glowing",
+    "happy",
+    "hidden",
+    "jolly",
+    "kind",
+    "lucky",
+    "mighty",
+    "misty",
+    "neon",
+    "nimble",
+    "playful",
+    "proud",
+    "quick",
+    "quiet",
+    "shiny",
+    "silent",
+    "stellar",
+    "sunny",
+    "swift",
+    "tidy",
+    "witty",
+  ] as const
+
+  const NOUNS = [
+    "cabin",
+    "cactus",
+    "canyon",
+    "circuit",
+    "comet",
+    "eagle",
+    "engine",
+    "falcon",
+    "forest",
+    "garden",
+    "harbor",
+    "island",
+    "knight",
+    "lagoon",
+    "meadow",
+    "moon",
+    "mountain",
+    "nebula",
+    "orchid",
+    "otter",
+    "panda",
+    "pixel",
+    "planet",
+    "river",
+    "rocket",
+    "sailor",
+    "squid",
+    "star",
+    "tiger",
+    "wizard",
+    "wolf",
+  ] as const
+
+  export function create() {
+    return [
+      ADJECTIVES[Math.floor(Math.random() * ADJECTIVES.length)],
+      NOUNS[Math.floor(Math.random() * NOUNS.length)],
+    ].join("-")
+  }
+}

opencode/packages/util/sst-env.d.ts

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+/* This file is auto-generated by SST. Do not edit. */
+/* tslint:disable */
+/* eslint-disable */
+/* deno-fmt-ignore-file */
+
+/// <reference path="../../sst-env.d.ts" />
+
+import "sst"
+export {}

opencode/packages/util/tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "skipLibCheck": true,
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "allowJs": true,
+    "noEmit": true,
+    "strict": true,
+    "isolatedModules": true
+  }
+}