[BUG] Type error: A type predicate cannot reference element 'element' in a binding pattern.

Platform

debain

Browser

non

Current Behavior

/vol1/1000/gitcocedir/OpenCut# docker compose up -d
WARN[0000] The "FREESOUND_CLIENT_ID" variable is not set. Defaulting to a blank string.
WARN[0000] The "FREESOUND_API_KEY" variable is not set. Defaulting to a blank string.
WARN[0000] The "FREESOUND_CLIENT_ID" variable is not set. Defaulting to a blank string.
WARN[0000] The "FREESOUND_API_KEY" variable is not set. Defaulting to a blank string.
[+] Building 25.8s (17/21)
=> [internal] load local bake definitions 0.0s
=> => reading from stdin 720B 0.0s
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 1.72kB 0.0s
=> [internal] load metadata for docker.io/oven/bun:alpine 3.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 256B 0.0s
=> [base 1/1] FROM docker.io/oven/bun:alpine@sha256:7ed9f74c326d1c260abe247ac423 0.0s
=> => resolve docker.io/oven/bun:alpine@sha256:7ed9f74c326d1c260abe247ac423ccbf5 0.0s
=> [internal] load build context 0.1s
=> => transferring context: 152.15kB 0.0s
=> CACHED [builder 1/9] WORKDIR /app 0.0s
=> CACHED [runner 2/7] RUN addgroup --system --gid 1001 nodejs 0.0s
=> CACHED [runner 3/7] RUN adduser --system --uid 1001 nextjs 0.0s
=> CACHED [builder 2/9] COPY package.json package.json 0.0s
=> CACHED [builder 3/9] COPY bun.lock bun.lock 0.0s
=> CACHED [builder 4/9] COPY turbo.json turbo.json 0.0s
=> CACHED [builder 5/9] COPY apps/web/package.json apps/web/package.json 0.0s
=> CACHED [builder 6/9] RUN bun install 0.0s
=> CACHED [builder 7/9] COPY apps/web/ apps/web/ 0.0s
=> CACHED [builder 8/9] WORKDIR /app/apps/web 0.0s
=> ERROR [builder 9/9] RUN bun run build 22.4s

[builder 9/9] RUN bun run build:
0.222 $ next build
1.785 Starting content-collections content-collections.ts
1.880 build started ...
1.894 ... finished build of 1 collection and 3 documents in 14ms
1.916 ▲ Next.js 16.1.3 (Turbopack)
1.916
1.933 Creating an optimized production build ...
11.80 ✓ Compiled successfully in 8.8s
11.80 Running TypeScript ...
21.98 Failed to compile.
21.98
21.98 ./src/lib/timeline/audio-separation/index.ts:34:5
21.98 Type error: A type predicate cannot reference element 'element' in a binding pattern.
21.98
21.98 32 | element: TimelineElement;
21.98 33 | mediaAsset: MediaAsset | null | undefined;
21.98 > 34 | }): element is VideoElement {
21.98 | ^
21.98 35 | return (
21.98 36 | element.type === "video" &&
21.98 37 | isSourceAudioEnabled({ element }) &&
22.09 Next.js build worker exited with code: 1 and signal: null
22.17 error: script "build" exited with code 1

---

Dockerfile:37

---

35 |

36 | WORKDIR /app/apps/web

37 | >>> RUN bun run build

38 |

39 | # Production image

---

failed to solve: process "/bin/sh -c bun run build" did not complete successfully: exit code: 1

Expected Behavior

No response

Recurrence Probability

Always

Steps To Reproduce

According to your .md requirements, after cloning the file, directly execute the docker compose up -d

Anything else?

No response

Start with apps/web/src/lib/timeline/audio-separation/index.ts at the reported type predicate on line 34, then inspect the surrounding TimelineElement and VideoElement definitions. Run bun run build from apps/web, or reproduce with docker compose up -d; done means the TypeScript check completes without this error and the production build succeeds.