Code improvements #857
Code improvements #857
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WalkthroughRefactors numeric parsing and character-code usage to explicit Number.* and .codePointAt, replaces window references with globalThis (including public exposure), and tightens several null/undefined checks and launchQueue detection in event handlers and UI logic. Changes
Sequence Diagram(s)Estimated code review effort🎯 2 (Simple) | ⏱️ ~10 minutes Pre-merge checks and finishing touches❌ Failed checks (2 warnings)
✅ Passed checks (1 passed)
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Actionable comments posted: 0
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⚠️ Outside diff range comments (2)
src/main.js (2)
2015-2024: Critical typo: gconfigField → configField causes ReferenceError in Expo adjust.This throws on Alt+wheel “field-quick-adjust”.
- changedValue += `${gconfigField.friendlyName} ${( + changedValue += `${configField.friendlyName} ${( configField.curve.power * 100 ).toFixed(2)}%\n`;
2341-2351: Bookmark visibility/count logic treats “undefined” as a bookmark.Use nullish checks instead of strict null:
- bookmarkTimes[e.which - 48] === null ? "hidden" : "visible" + bookmarkTimes[e.which - 48] == null ? "hidden" : "visible" - for (let i = 0; i <= 9; i++) { - countBookmarks += bookmarkTimes[i] === null ? 0 : 1; - } + for (let i = 0; i <= 9; i++) { + countBookmarks += bookmarkTimes[i] == null ? 0 : 1; + }
🧹 Nitpick comments (3)
src/main.js (3)
1713-1721: Avoid brittle bookmark index extraction from className; loop also skips 9.
- className.slice(-1) breaks when other classes are present or for multi‑digit suffixes.
- The loop at Line 1713 excludes bookmark 9.
Apply:
- for (let i = 1; i < 9; i++) { + for (let i = 1; i <= 9; i++) { - bookmarkTimes[Number.parseInt(this.className.slice(-1))] + bookmarkTimes[ + Number.parseInt( + this.className.match(/\bbookmark-(\d+)\b/)[1], + 10 + ) + ]
1841-1847: Standardize radix and avoid repeated parses of indices.Several Number.parseInt calls omit radix and repeat parsing. Parse once with radix 10.
Example (apply pattern to similar spots shown in ranges):
- for (const configField of graphConfig[Number.parseInt(graph)].fields) { + const gi = Number.parseInt(graph, 10); + for (const configField of graphConfig[gi].fields) { - if (graphConfig[Number.parseInt(graph)].fields[Number.parseInt(field)].default == null) { + const fi = Number.parseInt(field, 10); + if (graphConfig[gi].fields[fi].default == null) {Benefits: removes legacy-octal ambiguity and minor perf churn.
Also applies to: 1852-1861, 1878-1884, 1889-1897, 1921-1931, 1936-1951, 1972-1977, 1981-1991, 2015-2016, 2029-2043
2201-2296: Keyboard handling via codePointAt is fine; consider modernizing later.Works equivalently to legacy keyCodes for ASCII. Optional follow‑up: migrate to event.key for readability and to avoid deprecated e.which.
Also applies to: 2362-2381, 2383-2416, 2418-2427, 2431-2433, 2435-2449
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📒 Files selected for processing (1)
src/main.js(31 hunks)
🧰 Additional context used
🧬 Code graph analysis (1)
src/main.js (4)
src/graph_config_dialog.js (1)
graph(606-611)src/graph_legend.js (2)
field(218-218)i(216-216)src/grapher.js (1)
field(1103-1103)src/tools.js (5)
constrain(290-292)i(27-27)i(114-114)i(138-138)i(148-148)
🔇 Additional comments (4)
src/main.js (4)
441-441: LGTM: explicit radix 10 on log index parse.
2114-2121: LGTM: zoom step math with Alt/Shift is clear and consistent.Also applies to: 2437-2445
2476-2526: LGTM: slider format/from and Number.parseFloat usage.
2537-2556: globalThis adoption — repo already uses globalThis; confirm runtime support
- Findings: public API assigned to globalThis.blackboxLogViewer (src/main.js:2608); no occurrences of window.blackboxLogViewer. Drag/drop handlers set on globalThis at src/main.js:2537–2546; no other .ondragover/.ondrop or addEventListener('dragover'|'drop') found.
- Other globalThis usages: src/graph_map.js:243, src/vendor.js:9, src/main.js (40, 1660, 1662, 1668), src/sticks.js:44, src/jquery.js:11,13, src/flightlog_parser.js:15–19.
- Action: verify your supported browsers/Electron/Chromium/Node targets guarantee globalThis; if not, add a small fallback/polyfill or expose window.blackboxLogViewer alongside globalThis.blackboxLogViewer.
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Actionable comments posted: 1
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⚠️ Outside diff range comments (2)
src/main.js (2)
39-41: Fix: bareuserSettingswill throw in module scope — create a binding and keep it in sync with global.This file runs as an ES module;
globalThis.userSettings = nulldoesn’t create a local identifier. All unqualifieduserSettingsreads/writes below will hit a ReferenceError. Introduce a localletand sync it in the dialog callbacks.-// TODO: this is a hack, once we move to web fix this -globalThis.userSettings = null; +// TODO: this is a hack, once we move to web fix this +let userSettings = null; +globalThis.userSettings = null;- prefs.get("userSettings", function (item) { + prefs.get("userSettings", function (item) { if (item) { - globalThis.userSettings = $.extend({}, defaultSettings, item); + globalThis.userSettings = $.extend({}, defaultSettings, item); + userSettings = globalThis.userSettings; } else { - globalThis.userSettings = defaultSettings; + globalThis.userSettings = defaultSettings; + userSettings = defaultSettings; } });- // onSave - globalThis.userSettings = newSettings; + // onSave + globalThis.userSettings = newSettings; + userSettings = newSettings;Also applies to: 1659-1664, 1666-1672
2533-2543: Bug:launchQueueshould be accessed viaglobalThis.launchQueue(ESM scoping).Bare
launchQueueisn’t a binding in modules even if present on the global object. Use the qualified reference.- if ("launchQueue" in globalThis) { - launchQueue.setConsumer(async (launchParams) => { + if ("launchQueue" in globalThis) { + globalThis.launchQueue.setConsumer(async (launchParams) => { console.log("Opening files by extension in the desktop:", launchParams); const files = []; for (const fileHandler of launchParams.files) { console.log("launchQueue file", fileHandler); files.push(await fileHandler.getFile()); } loadFiles(files); }); }
🧹 Nitpick comments (5)
src/main.js (5)
2521-2531: Harden drag-and-drop: guard for missing items and directory drops.
e.dataTransfer.items[0]orwebkitGetAsEntry()may be absent; fallback tofilesimproves cross‑browser behavior.- globalThis.ondrop = function (e) { + globalThis.ondrop = function (e) { e.preventDefault(); - - const item = e.dataTransfer.items[0]; - const entry = item.webkitGetAsEntry(); - if (entry.isFile) { - const file = e.dataTransfer.files[0]; - loadFiles([file]); - } + const dt = e.dataTransfer; + if (dt.items && dt.items.length) { + const item = dt.items[0]; + const entry = item.webkitGetAsEntry && item.webkitGetAsEntry(); + if (!entry || entry.isFile) { + const file = dt.files[0]; + if (file) loadFiles([file]); + } + } else if (dt.files && dt.files.length) { + loadFiles(Array.from(dt.files)); + } return false; };
1714-1720: Make radix explicit when parsing bookmark index.Be explicit to avoid edge cases; also avoid parsing from class name when a data‑ attribute would be cleaner.
- setCurrentBlackboxTime( - bookmarkTimes[Number.parseInt(this.className.slice(-1))] - ); + setCurrentBlackboxTime( + bookmarkTimes[Number.parseInt(this.className.slice(-1), 10)] + );
1840-1849: Use plain object fordefaultinstead of array-like.
default = []is misleading; use{}for shape fields.- if (configField.default == null) { - configField.default = []; + if (configField.default == null) { + configField.default = {}; configField.default.smoothing = configField.smoothing; configField.default.power = configField.curve.power; }- if (graphConfig[gi].fields[fi].default == null) { - graphConfig[gi].fields[fi].default = []; + if (graphConfig[gi].fields[fi].default == null) { + graphConfig[gi].fields[fi].default = {}; graphConfig[gi].fields[fi].default.smoothing = graphConfig[gi].fields[fi].smoothing; graphConfig[gi].fields[fi].default.power = graphConfig[gi].fields[fi].curve.power; return "<h4>Stored defaults for single pen</h4>"; }Also applies to: 1851-1858
1969-1976: Consistency: parsefieldindex before array access.You parse
graphbut notfieldhere. While"2"works, parsing improves clarity and avoids accidental property access.- const gi = Number.parseInt(graph, 10); - // change single pen - graphConfig[gi].fields[field].curve.MinMax.min *= delta ? zoomScaleOut : zoomScaleIn; - graphConfig[gi].fields[field].curve.MinMax.max *= delta ? zoomScaleOut : zoomScaleIn; + const gi = Number.parseInt(graph, 10); + const fi = Number.parseInt(field, 10); + // change single pen + graphConfig[gi].fields[fi].curve.MinMax.min *= delta ? zoomScaleOut : zoomScaleIn; + graphConfig[gi].fields[fi].curve.MinMax.max *= delta ? zoomScaleOut : zoomScaleIn; changedValue += delta ? "Zoom out:\n" : "Zoom in:\n"; - changedValue += `${graphConfig[gi].fields[field].friendlyName}\n`; + changedValue += `${graphConfig[gi].fields[fi].friendlyName}\n`;
2163-2274: Keyboard handling changes look good; considere.keyfor readability.The switch to
.codePointAt(0)aligns with legacywhichcodes. Optionally migrate toe.key/e.codefor layout‑aware handling and to avoid deprecatedwhich.
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📒 Files selected for processing (1)
src/main.js(28 hunks)
🧰 Additional context used
🧬 Code graph analysis (1)
src/main.js (4)
src/graph_config_dialog.js (1)
graph(606-611)src/graph_legend.js (2)
field(218-218)i(216-216)src/grapher.js (1)
field(1103-1103)src/tools.js (5)
constrain(290-292)i(27-27)i(114-114)i(138-138)i(148-148)
🔇 Additional comments (3)
src/main.js (3)
2453-2476: Slider format/parsing changes LGTM.Using
Number.parseFloatinformat.fromand on “slide” keeps values numeric even with “%” suffixes.Also applies to: 2496-2499
441-448: Select log index: good use ofNumber.parseInt(..., 10).
2513-2520: Drag-over handler: good move toglobalThis.Prevents accidental page navigation on drops. Nice.
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⚠️ Outside diff range comments (1)
src/main.js (1)
2533-2543: Bug: launchQueue referenced as an undeclared identifier in modules. Use globalThis.launchQueue.In ESM/strict mode, checking
"launchQueue" in globalThisthen callinglaunchQueue.setConsumer(...)throws ReferenceError. Access via globalThis.Apply:
- if ("launchQueue" in globalThis) { - launchQueue.setConsumer(async (launchParams) => { + if ("launchQueue" in globalThis && globalThis.launchQueue) { + globalThis.launchQueue.setConsumer(async (launchParams) => { console.log("Opening files by extension in the desktop:", launchParams); const files = []; for (const fileHandler of launchParams.files) { console.log("launchQueue file", fileHandler); files.push(await fileHandler.getFile()); } loadFiles(files); }); }
🧹 Nitpick comments (5)
src/main.js (5)
1713-1721: Bookmark index parsing: add radix and consider robust index extraction.Current code slices the last class char; safer to parse data-* or the trailing digits and always use radix 10.
Apply this diff to add an explicit radix now; consider moving to a data attribute in a follow-up:
- bookmarkTimes[Number.parseInt(this.className.slice(-1))] + bookmarkTimes[Number.parseInt(this.className.slice(-1), 10)]Also verify handlers exist for 1–9 (the loop uses i < 9, so 9 may be missing).
1958-1966: Zoom adjustments: normalize field index for clarity.Array access with a string key works, but parsing to a number improves readability and prevents accidental property access.
Apply:
if (graph != null && field != null) { - const gi = Number.parseInt(graph, 10); - // change single pen - graphConfig[gi].fields[field].curve.MinMax.min *= delta ? zoomScaleOut : zoomScaleIn; - graphConfig[gi].fields[field].curve.MinMax.max *= delta ? zoomScaleOut : zoomScaleIn; + const gi = Number.parseInt(graph, 10); + const fi = Number.parseInt(field, 10); + // change single pen + graphConfig[gi].fields[fi].curve.MinMax.min *= delta ? zoomScaleOut : zoomScaleIn; + graphConfig[gi].fields[fi].curve.MinMax.max *= delta ? zoomScaleOut : zoomScaleIn; changedValue += delta ? "Zoom out:\n" : "Zoom in:\n"; - changedValue += `${graphConfig[gi].fields[field].friendlyName}\n`; + changedValue += `${graphConfig[gi].fields[fi].friendlyName}\n`; return changedValue; }Also applies to: 1970-1975
2180-2201: Keyboard handling: prefer e.key over numeric codes.Using e.key (e.g., 'i','o','m',' ') improves readability and IME/layout robustness; no behavior change required.
Also applies to: 2216-2261, 2265-2274, 2338-2343, 2359-2367, 2381-2387, 2393-2399, 2407-2409
2513-2519: globalThis.ondragover is okay; consider addEventListener for composability.Direct assignment can be clobbered by other scripts; addEventListener is safer. Optional.
2521-2531: Drag-and-drop: guard empty items and fall back to files.Accessing items[0] can throw; also handle directories gracefully.
Apply:
- globalThis.ondrop = function (e) { + globalThis.ondrop = function (e) { e.preventDefault(); - - const item = e.dataTransfer.items[0]; - const entry = item.webkitGetAsEntry(); - if (entry.isFile) { - const file = e.dataTransfer.files[0]; - loadFiles([file]); - } + const dt = e.dataTransfer; + const items = dt && dt.items ? Array.from(dt.items) : []; + if (items.length && items[0].kind === "file") { + const entry = items[0].webkitGetAsEntry && items[0].webkitGetAsEntry(); + if (!entry || entry.isFile) { + const file = dt.files && dt.files[0]; + if (file) loadFiles([file]); + } + } else if (dt.files && dt.files.length) { + loadFiles(Array.from(dt.files)); + } return false; };
📜 Review details
Configuration used: Path: .coderabbit.yaml
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (1)
src/main.js(28 hunks)
🧰 Additional context used
🧬 Code graph analysis (1)
src/main.js (4)
src/graph_config_dialog.js (1)
graph(606-611)src/graph_legend.js (2)
field(218-218)i(216-216)src/grapher.js (1)
field(1103-1103)src/tools.js (5)
constrain(290-292)i(27-27)i(114-114)i(138-138)i(148-148)
🔇 Additional comments (11)
src/main.js (11)
441-441: Use of Number.parseInt with radix is correct.Good defensive parsing on the log index.
1564-1569: Switch to Number.parseFloat is fine here.Maintains behavior and avoids global parseFloat.
1839-1849: Indices parsed with radix 10 — good.Consistent integer parsing and defaults snapshotting look correct.
Also applies to: 1851-1858
1874-1883: Restore defaults path looks correct.Radix usage and assignments are sound.
Also applies to: 1885-1894
1915-1926: Smoothing adjustments: solid bounds handling.Use of constrain and explicit radix is good; message formatting is clear.
Also applies to: 1929-1939
1997-2007: Expo adjustments: consistent and bounded — looks good.Radix specified; range constraints applied.
Also applies to: 2011-2021
2091-2091: Zoom step math remains correct.Combining shift/alt modifiers with additive deltas is preserved.
Also applies to: 2098-2098, 2413-2413, 2421-2421
2457-2458: Slider format.from using Number.parseFloat is correct.Works with strings like "100%".
2475-2476: Playback slider parsing is fine.No regressions expected.
2497-2498: Zoom slider parsing is fine.No regressions expected.
2584-2587: Backward-compat global alias retained — thank you.Keeping window.blackboxLogViewer avoids breaking external consumers.
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