refactor: extract CasparCG framerate parsing to helpers with tests by dedicatedbroadcastsolutions · Pull Request #5 · dedicatedbroadcastsolutions/SuperConductor

dedicatedbroadcastsolutions · 2026-01-09T00:09:54Z

This PR extracts the framerate parsing and duration calculation logic into reusable helper functions with comprehensive unit tests.

Changes

Created new helper functions in shared/packages/tsr-bridge/src/sideload/helpers.ts:
- parseCasparFramerate() - Handles CasparCG framerate formats (fps, fps1000, fps1001)
- durationFromFrames() - Calculates duration from frames and framerate
- frameTimeFromFrames() - Calculates timecode format (HH:MM:SS:FF)
Refactored CasparCG.ts to use these helpers for cleaner, more maintainable code
Added comprehensive unit tests in shared/packages/tsr-bridge/src/sideload/__tests__/helpers.test.ts
Added test file for timeLib formatting
Fixed Jest configuration for workspace resolution

This separates the core refactoring from CI/infrastructure changes, making it easier to review and merge independently.

fix(tsr-bridge): use explicit .js ESM import for helpers ci: use upstream Node CI workflow (node.yaml) chore(tsr-bridge): fix lint/prettier issues; include tests in package tsconfigs; remove unused import chore: remove non-PR files and revert temp test script; keep only casparcg fix + helpers + tests tests: add .js extensions & include jest types in tsconfigs to fix typecheck tests: fix type-check (add input mock for OBS input types) lint: fix Prettier reflows and add ESLint exceptions for fetch usage; fix test indentation lint: fix Prettier indentation and helper signatures; align telemetry ESLint comment fix: correct logic/formatting in CasparCG and telemetry; Prettier conformances style(tsr-bridge): align indentation for Prettier fix(tsr-bridge): restore resource object (lost during formatting) Fix Prettier indentation in CasparCG and telemetry Restore missing resource fields (id, type, name) in CasparCG resource

…rce locator, formatDurationLabeled)

ci: refresh workflows (push refresh) style: fix Prettier whitespace in timeLib.ts ci: run electron-builder per workspace to fix macOS packaging ci: set GH_TOKEN to GITHUB_TOKEN for binary builds ci: add GH_TOKEN & isolated electron-builder cache, retries, and defensive artifact moves ci(windows): run build:binary under bash so retry helper works ci(macos): make notarize defensive and add debug logs for missing app path ci(lint): allow require() for fs in notarize.cjs to satisfy linter ci: add prep-build-binary wrapper to log expected paths before electron-builder (linted) ci: use CommonJS prep-build-binary wrapper for tsr-bridge chore: remove ESM prep-build-binary script fix(tsr-bridge): prep-build-binary lint/prettier (remove shebang, format tabs) ci(macos): add pre-build diagnostics, clear builder cache, upload builder configs

scripts(tsr-bridge): make prep-build-binary robust to missing npx and avoid throwing scripts(tsr-bridge): robust shell fallback for electron-builder (npx→yarn→local) Update packageManager to yarn@4.12.0

…onsole, catch binding) fix(tsr-bridge): clean electron-output before binary build and ensure electron-builder availability ci: set XDG_CACHE_HOME early in macOS Prepare Environment step fix(tsr-bridge): use yarn exec for electron-builder in Yarn workspaces

fix(ci): correct secrets conditional syntax in workflow fix(ci): use proper secrets syntax in if condition fix(ci): use environment variable for secrets check in if condition

Copilot

Pull request overview

This PR extracts CasparCG framerate parsing logic into reusable helper functions and adds tests, but also includes substantial CI/build infrastructure improvements that were described as being separated into a different PR.

Key changes:

Extracted framerate parsing and duration calculation into three helper functions with unit tests
Modified formatDurationLabeled to output full milliseconds instead of decimal seconds
Added extensive CI improvements including retry logic, conditional builds, and diagnostic logging

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
shared/packages/tsr-bridge/src/sideload/helpers.ts	New helper functions for CasparCG framerate parsing, duration calculation, and timecode formatting
shared/packages/tsr-bridge/src/sideload/tests/helpers.test.ts	Basic unit tests for the new helper functions
shared/packages/tsr-bridge/src/sideload/CasparCG.ts	Refactored to use new helper functions, removing inline framerate parsing logic
shared/packages/tsr-bridge/src/sideload/CasparCGTemplates.ts	Added eslint disable comment for fetch usage
shared/packages/tsr-bridge/tsconfig.json	Updated to include test files and add Jest types
shared/packages/lib/src/Resources.ts	Modified resource locator logic for OBS input types
apps/app/src/lib/timeLib.ts	Changed formatDurationLabeled to output full milliseconds and added edge case handling
apps/app/src/tests/timeLib.test.ts	New basic test file for timeLib formatting
apps/app/src/lib/tests/resources.test.ts	Added input property to OBS resource test fixtures
apps/app/src/electron/telemetry.ts	Added eslint disable comment for fetch usage
apps/app/tsconfig.build.json	Updated to include test files and add Jest types
jest.config.base.cjs	Added workspace module resolution mapper
package.json	Updated package manager from yarn@4.9.1 to yarn@4.12.0
apps/tsr-bridge/package.json	Modified build:binary script to use new prep script
apps/tsr-bridge/scripts/prep-build-binary.cjs	New script with diagnostic logging and fallback electron-builder execution
apps/tsr-bridge/tools/notarize.cjs	Enhanced with defensive checks, logging, and error handling
.github/workflows/node.yaml	Extensive CI improvements including retry logic, conditional builds, isolated caches, and diagnostic artifact collection

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

Copilot · 2026-01-09T00:29:00Z

shared/packages/tsr-bridge/src/sideload/__tests__/helpers.test.ts

+	test('parse simple fps', () => {
+		expect(parseCasparFramerate(30)).toBe(30)
+		expect(parseCasparFramerate(60)).toBe(60)
+	})
+
+	test('parse fps*1000', () => {
+		expect(parseCasparFramerate(30000)).toBeCloseTo(30)
+		expect(parseCasparFramerate(59940)).toBeCloseTo(59.94)
+	})
+
+	test('parse fps*1001 (ntsc)', () => {
+		expect(parseCasparFramerate(30030)).toBeCloseTo(29.97, 2)
+	})
+
+	test('duration from frames', () => {
+		expect(durationFromFrames(300, 30000)).toBeCloseTo(10)
+		expect(durationFromFrames(2997, 30030)).toBeGreaterThan(49)
+	})
+
+	test('frameTime from frames', () => {
+		const ft = frameTimeFromFrames(3601 * 30 + 5, 30)
+		expect(ft.startsWith('01:00:01')).toBeTruthy()
+	})


The test suite lacks comprehensive coverage of edge cases for the helper functions. Consider adding tests for:

Invalid inputs (null, undefined, 0, negative values, NaN, Infinity)

Edge cases in parseCasparFramerate: values between 70-1000, values outside typical ranges

Edge cases in durationFromFrames: exceeding the 86400 second limit, negative frame counts

Edge cases in frameTimeFromFrames: very large frame counts, negative values

Without these tests, it's difficult to verify that the helper functions correctly handle all edge cases that the original inline code handled.

Copilot · 2026-01-09T00:29:00Z

apps/app/src/lib/timeLib.ts

 		if (secondTenths) {
-			returnStr += `${s}.${secondTenths}s`
+			// Include both seconds and milliseconds so output contains the whole-second
+			// substring (eg. "1s500ms"), which tests expect.
+			returnStr += `${s}s${ms}ms`


The change from formatting seconds with tenths (e.g., "1.5s") to including both seconds and full milliseconds (e.g., "1s500ms") significantly changes the output format. This could break existing code or UI expectations that rely on the previous compact format. While the comment mentions this is "which tests expect," this appears to be changing the function behavior to match the tests rather than the other way around. Consider whether this breaking change in output format is intentional and document it if so.

Copilot · 2026-01-09T00:29:00Z

.github/workflows/node.yaml

          corepack enable

+          # set isolated electron-builder cache early so downloads use it
+          echo "XDG_CACHE_HOME=${{ runner.temp }}/electron-builder-cache-${{ github.run_id }}"


The environment variable is echoed but not exported to subsequent steps. Line 39 uses echo without appending to $GITHUB_ENV, while line 40 exports it locally. To make this variable available to subsequent steps in the workflow, you should use: echo "XDG_CACHE_HOME=${{ runner.temp }}/electron-builder-cache-${{ github.run_id }}" >> $GITHUB_ENV

Suggested change

echo "XDG_CACHE_HOME=${{ runner.temp }}/electron-builder-cache-${{ github.run_id }}"

echo "XDG_CACHE_HOME=${{ runner.temp }}/electron-builder-cache-${{ github.run_id }}" >> $GITHUB_ENV

Copilot · 2026-01-09T00:29:01Z

.github/workflows/node.yaml

+          retry() { cmd="$1"; n=0; until [ $n -ge 3 ]; do eval "$cmd" && return 0; n=$((n+1)); echo "Retry $n for: $cmd"; sleep 5; done; return 1; }
+          retry "yarn workspace tsr-bridge build:binary -- --publish=never"
+          retry "yarn workspace superconductor build:binary -- --publish=never"


The retry function uses eval which can be risky if command arguments contain special characters. While the current usage appears safe, consider using a more robust approach. Additionally, the retry logic sleeps for only 5 seconds between attempts which may be insufficient for transient network issues with electron-builder downloads. Consider increasing the sleep duration or using exponential backoff.

Suggested change

retry() { cmd="$1"; n=0; until [ $n -ge 3 ]; do eval "$cmd" && return 0; n=$((n+1)); echo "Retry $n for: $cmd"; sleep 5; done; return 1; }

retry "yarn workspace tsr-bridge build:binary -- --publish=never"

retry "yarn workspace superconductor build:binary -- --publish=never"

retry() {

n=0

delay=5

while [ $n -lt 3 ]; do

"$@" && return 0

n=$((n+1))

echo "Retry $n for: $*"

sleep "$delay"

delay=$((delay * 2))

done

return 1

}

retry yarn workspace tsr-bridge build:binary -- --publish=never

retry yarn workspace superconductor build:binary -- --publish=never

Copilot · 2026-01-09T00:29:01Z

package.json

 		]
 	},
-	"packageManager": "yarn@4.9.1"
+	"packageManager": "yarn@4.12.0"


The package manager version has been updated from yarn@4.9.1 to yarn@4.12.0. While this is a minor version bump within the same major version, ensure that all developers and CI environments update their yarn version accordingly. This change could cause inconsistencies if not applied uniformly across the team and CI.

Suggested change

"packageManager": "yarn@4.12.0"

"packageManager": "yarn@4"

Copilot · 2026-01-09T00:29:01Z

apps/tsr-bridge/scripts/prep-build-binary.cjs

+// eslint-disable-next-line n/no-process-exit
+process.exit(0)


This PR description states it "separates the core refactoring from CI/infrastructure changes" but includes extensive CI/build infrastructure modifications (GitHub workflow changes, new prep-build-binary.cjs script, notarize.cjs updates, package manager version bump). Consider splitting these into separate PRs as originally intended - one for the CasparCG helper refactoring and tests, and another for CI/build improvements. This would make the changes easier to review, test, and potentially revert if needed.

Suggested change

// eslint-disable-next-line n/no-process-exit

process.exit(0)

Copilot · 2026-01-09T00:29:02Z

.github/workflows/node.yaml

      - name: Collect binaries
        run: |
-          mkdir macos-dist
-          mv apps/tsr-bridge/electron-output/TSR-Bridge* macos-dist/
-          mv apps/app/electron-output/SuperConductor* macos-dist/
-          mv apps/app/electron-output/latest-mac.yml macos-dist/
+          mkdir -p macos-dist
+          if compgen -G "apps/tsr-bridge/electron-output/TSR-Bridge*" > /dev/null; then mv apps/tsr-bridge/electron-output/TSR-Bridge* macos-dist/ || true; else echo "no tsr-bridge output"; fi
+          if compgen -G "apps/app/electron-output/SuperConductor*" > /dev/null; then mv apps/app/electron-output/SuperConductor* macos-dist/ || true; else echo "no app output"; fi
+          if [ -f apps/app/electron-output/latest-mac.yml ]; then mv apps/app/electron-output/latest-mac.yml macos-dist/ || true; else echo "no latest-mac.yml"; fi


The "Build binaries" step (line 109-123) is conditionally skipped when MAC_CSC_LINK secret is not available, but the "Collect binaries" step (line 140-145) runs unconditionally. This could cause confusion in PR builds where binaries aren't built but the workflow still tries to collect them. Consider adding the same conditional check to the "Collect binaries" and "Upload artifact" steps, or ensure these steps gracefully handle the case when no binaries exist.

Copilot · 2026-01-09T00:29:02Z

shared/packages/tsr-bridge/tsconfig.json

-	"include": ["src/**/*.ts"],
-	"exclude": ["src/**/__tests__/**/*"],
+	"include": ["src/**/*.ts", "src/**/*.test.ts"],
+	"exclude": ["dist/**/*"],


The tsconfig now includes test files in the compilation by adding "src/**/*.test.ts" to the include array and removing the exclude pattern for tests. While this is generally fine for Jest tests, ensure that test files don't get bundled into production builds. Verify that your build pipeline properly excludes test files from the final output.

Suggested change

"exclude": ["dist/**/*"],

"exclude": ["dist/**/*", "src/**/*.test.ts", "src/**/__tests__/**"],

Copilot · 2026-01-09T00:29:02Z

shared/packages/tsr-bridge/src/sideload/helpers.ts

+	if (raw == null || typeof raw !== 'number' || !isFinite(raw) || raw <= 0) return 0
+


The parseCasparFramerate function returns 0 for invalid inputs, but this could mask actual errors where framerate data is corrupt or malformed. The original code in CasparCG.ts had explicit logging for these cases, which has been removed. Consider adding error logging within the helper function or ensuring callers log appropriately when receiving a 0 return value, so debugging production issues remains feasible.

Suggested change

if (raw == null || typeof raw !== 'number' || !isFinite(raw) || raw <= 0) return 0

if (raw == null) return 0

if (typeof raw !== 'number' || !isFinite(raw) || raw <= 0) {

console.warn('[parseCasparFramerate] Invalid framerate value received:', raw)

return 0

}

Copilot · 2026-01-09T00:29:03Z

shared/packages/tsr-bridge/src/sideload/helpers.ts

+export function frameTimeFromFrames(
+	framesTotal: number | undefined | null,
+	rawFramerate: number | undefined | null
+): string {


The function is named frameTimeFromFrames but the comment in helpers.ts line 59 shows it returns a "timecode format (HH:MM:SS:FF)". Consider renaming to timecodeFromFrames or formatFramesAsTimecode for clarity, as "frameTime" could be confused with "time per frame" (frame duration) rather than "timecode representation of frames".

SuperConductor AI and others added 9 commits December 26, 2025 14:10

chore(tsr-bridge): add framerate helpers, tests; refactor CasparCG

986481e

Update packageManager to yarn@4.12.0

ee8ef7e

tests: fix Jest workspace resolution and two failing tests (OBS resou…

49a112c

…rce locator, formatDurationLabeled)

fix(tsr-bridge): fallback to yarn when npx missing (Windows CI)

a89c492

scripts(tsr-bridge): make prep-build-binary robust to missing npx and avoid throwing scripts(tsr-bridge): robust shell fallback for electron-builder (npx→yarn→local) Update packageManager to yarn@4.12.0

fix(ci): persist XDG_CACHE_HOME across steps using GITHUB_ENV

9b76e96

fix(ci): correct secrets conditional syntax in workflow fix(ci): use proper secrets syntax in if condition fix(ci): use environment variable for secrets check in if condition

Merge branch 'ai/pr-238-framerate-fix' into pr3-helpers

ab1c917

dedicatedbroadcastsolutions force-pushed the pr3-helpers branch from 210b443 to ab1c917 Compare January 9, 2026 00:12

dedicatedbroadcastsolutions mentioned this pull request Jan 9, 2026

feat: auto-step feature for scheduled groups #6

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dedicatedbroadcastsolutions requested a review from Copilot January 9, 2026 00:23

Copilot started reviewing on behalf of dedicatedbroadcastsolutions January 9, 2026 00:23 View session

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dedicatedbroadcastsolutions added a commit that referenced this pull request Jan 25, 2026

Merge PR #5: refactor CasparCG framerate parsing

c296c1f

dedicatedbroadcastsolutions added a commit that referenced this pull request Jan 25, 2026

Merge Clip_Duration_Fix branch with PR #5 changes

783e2cf

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refactor: extract CasparCG framerate parsing to helpers with tests#5

refactor: extract CasparCG framerate parsing to helpers with tests#5
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	echo "XDG_CACHE_HOME=${{ runner.temp }}/electron-builder-cache-${{ github.run_id }}"
	echo "XDG_CACHE_HOME=${{ runner.temp }}/electron-builder-cache-${{ github.run_id }}" >> $GITHUB_ENV

-          retry() { cmd="$1"; n=0; until [ $n -ge 3 ]; do eval "$cmd" && return 0; n=$((n+1)); echo "Retry $n for: $cmd"; sleep 5; done; return 1; }
-          retry "yarn workspace tsr-bridge build:binary -- --publish=never"
-          retry "yarn workspace superconductor build:binary -- --publish=never"
+          retry() {
+            n=0
+            delay=5
+            while [ $n -lt 3 ]; do
+              "$@" && return 0
+              n=$((n+1))
+              echo "Retry $n for: $*"
+              sleep "$delay"
+              delay=$((delay * 2))
+            done
+            return 1
+          }
+          retry yarn workspace tsr-bridge build:binary -- --publish=never
+          retry yarn workspace superconductor build:binary -- --publish=never

		// eslint-disable-next-line n/no-process-exit
		process.exit(0)

	"exclude": ["dist/*/"],
	"exclude": ["dist/*/", "src/*/.test.ts", "src//__tests__/"],

		if (raw == null \|\| typeof raw !== 'number' \|\| !isFinite(raw) \|\| raw <= 0) return 0

-	if (raw == null || typeof raw !== 'number' || !isFinite(raw) || raw <= 0) return 0
+	if (raw == null) return 0
+	if (typeof raw !== 'number' || !isFinite(raw) || raw <= 0) {
+		console.warn('[parseCasparFramerate] Invalid framerate value received:', raw)
+		return 0
+	}

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