Add a utility component for loading images from URLs #35
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Caution Review failedThe pull request is closed. WalkthroughThe changes introduce a new Svelte component for loading images on a map, alongside updates to existing entries in the Changes
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (8)
src/content/examples/image-loader/Images.svelte (3)
4-28: Consider adding runtime validation for coordinates.While the TypeScript types provide compile-time safety, it would be beneficial to add runtime validation for the coordinates to ensure they are within valid ranges (longitude: -180 to 180, latitude: -90 to 90).
Consider adding a validation function:
function validateCoordinates(coord: number[]): boolean { const [lng, lat] = coord; return lng >= -180 && lng <= 180 && lat >= -90 && lat <= 90; }🧰 Tools
🪛 eslint
[error] 4-4: 'GeoJSON' is not defined.
(no-undef)
40-41: Consider security and performance implications of external images.Loading images from external domains:
- Could pose security risks if the domains are compromised
- May impact performance due to network latency
- Might cause issues if the external services are down
Recommendations:
- Consider hosting critical images locally
- Implement image preloading for better performance
- Add content security policy (CSP) headers
58-67: Consider performance optimization for symbol layer.The current SymbolLayer configuration allows both icon and text overlap which might impact rendering performance with dense data.
Consider:
- Adding clustering for dense data points
- Using
maxzoomandminzoomto control symbol visibility at different zoom levels- Implementing a more selective overlap strategy based on zoom levels
Example configuration:
<SymbolLayer layout={{ 'text-field': ['get', 'name'], 'icon-image': ['get', 'imageName'], 'icon-size': ['number', ['get', 'scale'], 1], 'icon-text-fit': 'both', - 'icon-overlap': 'always', - 'text-overlap': 'always' + 'icon-overlap': ['step', ['zoom'], 'never', 10, 'always'], + 'text-overlap': ['step', ['zoom'], 'never', 12, 'always'], + 'symbol-sort-key': ['get', 'year'] // Prioritize newer items }} />src/lib/maplibre/index.ts (1)
53-53: Consider adding usage examples in documentation.Since this is a new public API export, ensure that comprehensive documentation and usage examples are available for the ImageLoader utility component. This will help users understand how to effectively use it with GeoJSONSource and SymbolLayer components as mentioned in the PR objectives.
src/lib/maplibre/map/Image.svelte (3)
52-68: Simplify the image property updates and remove thefirstRunflagThe
$effectblock from lines 52-68 updates the image properties whenoptionschange, but it skips the first run using thefirstRunflag. This adds complexity and can potentially lead to timing issues. Since you're already adding the image with the initialoptions, you can simplify the logic by updating the image wheneveroptionschange, without checking forfirstRun.Apply the following refactor to streamline the effect:
$effect(() => { - options; - if (!firstRun) { const image = mapCtx.map?.getImage(id); if (!image) { return; } image.pixelRatio = options?.pixelRatio ?? 1; image.sdf = options?.sdf ?? false; image.stretchX = options?.stretchX; image.stretchY = options?.stretchY; image.content = options?.content; image.textFitWidth = options?.textFitWidth; image.textFitHeight = options?.textFitHeight; mapCtx.map?.style.updateImage(id, image); - } }); - $effect(() => { - firstRun = false; - });By removing the
firstRuncheck, the image properties will be updated wheneveroptionschange, including after the initial load. This simplifies the code and ensures that any changes tooptionsare reflected immediately.
70-72: Remove unnecessary$effectblock settingfirstRunThe
$effectblock from lines 70-72 is solely used to setfirstRuntofalse. With the simplification suggested above, thefirstRunflag is no longer needed, and this effect can be removed to reduce code complexity.Apply this diff to remove the unnecessary effect:
- $effect(() => { - firstRun = false; - });
23-23: Remove thefirstRunvariable if it's no longer neededIf you implement the above suggestions, the
firstRunvariable declared at line 23 becomes redundant. Removing it cleans up the code.Apply this diff to remove the
firstRunvariable:- let firstRun = true;src/lib/maplibre/utilities/ImageLoader.svelte (1)
114-114: Remove unused variable_in the loopThe variable
_is assigned but never used, leading to a linting error.Apply this diff to resolve the issue:
- for (const [id, _] of loadedImages) { + for (const id of loadedImages.keys()) {🧰 Tools
🪛 eslint
[error] 114-114: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
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📒 Files selected for processing (6)
src/content/examples/Index.svelte(1 hunks)src/content/examples/image-loader/Images.svelte(1 hunks)src/content/examples/image-loader/content.svelte.md(1 hunks)src/lib/maplibre/index.ts(1 hunks)src/lib/maplibre/map/Image.svelte(3 hunks)src/lib/maplibre/utilities/ImageLoader.svelte(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- src/content/examples/image-loader/content.svelte.md
🧰 Additional context used
🪛 eslint
src/content/examples/image-loader/Images.svelte
[error] 4-4: 'GeoJSON' is not defined.
(no-undef)
src/lib/maplibre/utilities/ImageLoader.svelte
[error] 13-13: 'maplibregl' is not defined.
(no-undef)
[error] 114-114: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
🔇 Additional comments (7)
src/content/examples/Index.svelte (2)
14-15: LGTM! Consistent title casing
The text casing changes improve consistency with other menu items and follow proper title case conventions.
19-19: Verify the example path exists
The new image loader entry is well-structured and aligns with the PR objectives.
Let's verify that the example path exists:
✅ Verification successful
Path verification successful - example exists at the expected location
The image loader example path /examples/image-loader is valid, with the corresponding file present at src/content/examples/image-loader/Images.svelte.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check if the image loader example file exists
fd "Images.svelte" "src/content/examples/image-loader"
Length of output: 100
src/content/examples/image-loader/Images.svelte (2)
42-54: Good use of stretchable image configuration!
The implementation of stretchable images with precise control over stretch zones and content areas is well done. The pixelRatio configuration will ensure sharp rendering on high-DPI displays.
38-56:
Add error handling for image loading failures.
The ImageLoader component should handle cases where images fail to load from external URLs. Consider implementing fallback images and error reporting.
Let's verify if the ImageLoader component already handles these cases:
src/lib/maplibre/index.ts (1)
52-54: LGTM! Well-organized addition of the ImageLoader utility.
The new utility section is appropriately placed and follows the established organizational pattern of the barrel file.
Let's verify the existence of the referenced component:
✅ Verification successful
Verified: ImageLoader component exists and implements proper image loading functionality
The component is well-implemented with the following key features:
- Manages image loading for MapLibre maps
- Handles image metadata updates
- Properly cleans up resources on component destruction
- Includes loading state management
- Implements efficient image caching through the
loadedImagesMap
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#!/bin/bash
# Description: Verify the ImageLoader component exists and contains expected functionality
# Check if the file exists
fd "ImageLoader.svelte" src/lib/maplibre/utilities
# Verify the component's content includes image loading functionality
rg -A 10 "export default" src/lib/maplibre/utilities/ImageLoader.svelte
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#!/bin/bash
# Let's examine the actual content of the ImageLoader component
cat src/lib/maplibre/utilities/ImageLoader.svelte
# Also search for any references to this component to understand its usage
rg -l "ImageLoader" src/lib/maplibre
Length of output: 3150
src/lib/maplibre/map/Image.svelte (2)
44-44: Consider whether untrack is necessary when passing options
In the addImage method, you're using untrack(() => options) to pass the options parameter:
mapCtx.map.addImage(
id,
srcImage,
untrack(() => options)
);Since options is an object and may contain reactive properties, wrapping it with untrack prevents reactivity tracking. If you intend for changes to options to trigger updates to the image, you might not need untrack here. Consider passing options directly unless you have a specific reason to avoid reactivity.
41-46: Ensure image is properly updated when srcImage changes
In the effect starting at line 31, you handle adding and updating the image. Ensure that when srcImage changes, mapCtx.map.updateImage is called to reflect the new image content. Verify that this logic works as intended and that the image updates correctly on the map.
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| if (tasks) { | ||
| loading = true; | ||
| Promise.allSettled([tasks]).then(() => { |
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Correct the usage of Promise.allSettled
Wrapping the tasks array inside another array when calling Promise.allSettled is incorrect. This will cause Promise.allSettled to treat the array as a single promise.
Apply this diff to fix the function call:
- Promise.allSettled([tasks]).then(() => {
+ Promise.allSettled(tasks).then(() => {📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| Promise.allSettled([tasks]).then(() => { | |
| Promise.allSettled(tasks).then(() => { |
| loading = $bindable(), | ||
| children | ||
| }: { | ||
| images: Record<string, string | [string, Partial<maplibregl.StyleImageMetadata>]>; |
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Import 'maplibregl' to define 'StyleImageMetadata'
The type maplibregl.StyleImageMetadata is used but maplibregl is not imported, leading to a potential undefined identifier error.
Apply this diff to fix the issue:
+ import type maplibregl from 'maplibre-gl';
import { onDestroy, type Snippet } from 'svelte';
import { getMapContext } from '../contexts.svelte.js';
// ...
images: Record<string, string | [string, Partial<maplibregl.StyleImageMetadata>]>;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| images: Record<string, string | [string, Partial<maplibregl.StyleImageMetadata>]>; | |
| import type maplibregl from 'maplibre-gl'; | |
| import { onDestroy, type Snippet } from 'svelte'; | |
| import { getMapContext } from '../contexts.svelte.js'; | |
| images: Record<string, string | [string, Partial<maplibregl.StyleImageMetadata>]>; |
🧰 Tools
🪛 eslint
[error] 13-13: 'maplibregl' is not defined.
(no-undef)
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (4)
src/lib/maplibre/map/Image.svelte (2)
41-46: Consider adding error handling and consistent options usageWhile the image addition logic is sound, consider these improvements:
- Add error handling for image addition failures
- Include options in the updateImage call for consistency
-mapCtx.map.addImage( - id, - srcImage, - untrack(() => options) -); -firstRun = true; +try { + mapCtx.map.addImage( + id, + srcImage, + untrack(() => options) + ); + firstRun = true; +} catch (error) { + console.error(`Failed to add image ${id}:`, error); +}
Line range hint
1-78: Consider documenting the component's lifecycle and options behaviorThe implementation effectively manages image loading and updates, but would benefit from documentation explaining:
- The component's lifecycle (when images are added/updated)
- The behavior of dynamic options updates
- Usage examples with different option combinations
Consider adding JSDoc comments at the component level:
/** * Image component for MapLibre GL * * @component * @example * ```svelte * <Image * id="marker" * image={markerImage} * options={{ sdf: true, pixelRatio: 2 }} * /> * ``` * * @property {string} id - Unique identifier for the image * @property {ImageSource} image - The image source * @property {Partial<StyleImageMetadata>} [options] - Optional image metadata */src/lib/maplibre/utilities/ImageLoader.svelte (2)
46-82: Refactor repetitive image options comparisonThe image options comparison logic is repetitive and could be simplified.
Consider extracting this into a separate function:
function updateImageOptions( image: maplibregl.StyleImage, options: Partial<maplibregl.StyleImageMetadata> ): boolean { const updates = [ ['pixelRatio', 1], ['sdf', false], ['stretchX', undefined], ['stretchY', undefined], ['content', undefined], ['textFitHeight', undefined], ['textFitWidth', undefined] ] as const; return updates.reduce((changed, [key, defaultValue]) => { if (image[key] !== (options[key] ?? defaultValue)) { image[key] = options[key] ?? defaultValue; return true; } return changed; }, false); }
113-117: Fix unused variable in destructuringThe underscore variable is unused in the destructuring pattern.
Apply this change:
- for (const [id, _] of loadedImages) { + for (const [id] of loadedImages) {🧰 Tools
🪛 eslint
[error] 114-114: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
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📒 Files selected for processing (6)
src/content/examples/Index.svelte(1 hunks)src/content/examples/image-loader/Images.svelte(1 hunks)src/content/examples/image-loader/content.svelte.md(1 hunks)src/lib/maplibre/index.ts(1 hunks)src/lib/maplibre/map/Image.svelte(3 hunks)src/lib/maplibre/utilities/ImageLoader.svelte(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (4)
- src/content/examples/Index.svelte
- src/content/examples/image-loader/Images.svelte
- src/content/examples/image-loader/content.svelte.md
- src/lib/maplibre/index.ts
🧰 Additional context used
🪛 eslint
src/lib/maplibre/utilities/ImageLoader.svelte
[error] 13-13: 'maplibregl' is not defined.
(no-undef)
[error] 114-114: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
🔇 Additional comments (7)
src/lib/maplibre/map/Image.svelte (4)
4-4: LGTM! Well-typed interface extension
The addition of the optional options property with proper typing and the untrack import enhance the component's configurability while maintaining type safety.
Also applies to: 16-16
19-19: LGTM! Clean state initialization
The props destructuring and state initialization are well-structured and align with Svelte's best practices.
Also applies to: 23-23
70-72: LGTM! Clean state management
The first run flag reset is appropriately placed and implemented.
52-68: Add error handling and verify option types
The options update logic is comprehensive but could benefit from additional safety measures:
- Add error handling for updateImage failures
- Consider validating option values before application
-mapCtx.map?.style.updateImage(id, image);
+try {
+ mapCtx.map?.style.updateImage(id, image);
+} catch (error) {
+ console.error(`Failed to update image ${id}:`, error);
+}src/lib/maplibre/utilities/ImageLoader.svelte (3)
18-22: LGTM! Clean state management
Good use of Map data structure to track loaded images and their URLs efficiently.
120-122: LGTM! Clean conditional rendering
The rendering logic correctly waits for images to load before rendering children.
102-110:
Fix tasks handling issues
There are two issues in the tasks handling logic that need to be addressed:
- The condition
if (tasks)will always be truthy Promise.allSettled([tasks])wraps the array incorrectly
Apply these fixes:
- if (tasks) {
+ if (tasks.length > 0) {
loading = true;
- Promise.allSettled([tasks]).then(() => {
+ Promise.allSettled(tasks).then(() => {
initialLoaded = true;
loading = false;
});
} else {
initialLoaded = true;
}Likely invalid or redundant comment.
| <script lang="ts"> | ||
| import { onDestroy, type Snippet } from 'svelte'; | ||
| import { getMapContext } from '../contexts.svelte.js'; | ||
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| const mapCtx = getMapContext(); | ||
| if (!mapCtx.map) throw new Error('Map instance is not initialized.'); | ||
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| let { | ||
| images, | ||
| loading = $bindable(), | ||
| children | ||
| }: { | ||
| images: Record<string, string | [string, Partial<maplibregl.StyleImageMetadata>]>; | ||
| loading?: boolean; | ||
| children?: Snippet; | ||
| } = $props(); | ||
|
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Add missing maplibregl import
The type maplibregl.StyleImageMetadata is used but maplibregl is not imported.
Add the following import at the top of the file:
<script lang="ts">
+ import type maplibregl from 'maplibre-gl';
import { onDestroy, type Snippet } from 'svelte';📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| <script lang="ts"> | |
| import { onDestroy, type Snippet } from 'svelte'; | |
| import { getMapContext } from '../contexts.svelte.js'; | |
| const mapCtx = getMapContext(); | |
| if (!mapCtx.map) throw new Error('Map instance is not initialized.'); | |
| let { | |
| images, | |
| loading = $bindable(), | |
| children | |
| }: { | |
| images: Record<string, string | [string, Partial<maplibregl.StyleImageMetadata>]>; | |
| loading?: boolean; | |
| children?: Snippet; | |
| } = $props(); | |
| <script lang="ts"> | |
| import type maplibregl from 'maplibre-gl'; | |
| import { onDestroy, type Snippet } from 'svelte'; | |
| import { getMapContext } from '../contexts.svelte.js'; | |
| const mapCtx = getMapContext(); | |
| if (!mapCtx.map) throw new Error('Map instance is not initialized.'); | |
| let { | |
| images, | |
| loading = $bindable(), | |
| children | |
| }: { | |
| images: Record<string, string | [string, Partial<maplibregl.StyleImageMetadata>]>; | |
| loading?: boolean; | |
| children?: Snippet; | |
| } = $props(); |
🧰 Tools
🪛 eslint
[error] 13-13: 'maplibregl' is not defined.
(no-undef)
| tasks.push( | ||
| (async () => { | ||
| const image = await mapCtx.map?.loadImage(url); | ||
| if (mapCtx.map?.getImage(id)) { | ||
| mapCtx.map?.removeImage(id); | ||
| } | ||
| if (image && loadedImages.has(id)) { | ||
| mapCtx.map?.addImage(id, image?.data, options); | ||
| } | ||
| })() | ||
| ); |
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💡 Codebase verification
Add error handling for image loading failures
The current implementation lacks explicit error handling for image loading failures. The code uses Promise.allSettled() which prevents the entire batch from failing, but individual image loading errors are silently ignored. This could lead to missing images without any indication of failure. Specific issues:
loadImage()errors are not caught or logged- No feedback mechanism for failed image loads
- Silent failures could make debugging difficult
Key locations needing attention:
src/lib/maplibre/utilities/ImageLoader.svelte:89-99: Add try-catch block around the image loading logic- Consider adding error state tracking alongside the existing
loadingstate
🔗 Analysis chain
Verify error handling for image loading failures
The image loading logic should be resilient to network failures or invalid URLs.
Let's verify the error handling:
Let me gather more context about the error handling patterns in the codebase.
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#!/bin/bash
# Search for error handling patterns in image loading across the codebase
rg -A 5 "loadImage|addImage"
# Check for any existing error handling patterns
ast-grep --pattern 'try {
$$$
loadImage($$$)
$$$
} catch ($$$) {
$$$
}'
Length of output: 1179
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#!/bin/bash
# Search for the complete ImageLoader.svelte file to understand the broader context
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rg -A 5 "try.*catch.*map"
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (2)
src/lib/maplibre/utilities/ImageLoader.svelte (2)
46-82: Refactor image options update logicThe image options update logic is repetitive and could be simplified.
Consider refactoring to reduce repetition:
- if (image.pixelRatio !== (options.pixelRatio ?? 1)) { - image.pixelRatio = options.pixelRatio ?? 1; - changed = true; - } - // ... similar blocks for other properties + const optionsMap = { + pixelRatio: options.pixelRatio ?? 1, + sdf: options.sdf ?? false, + stretchX: options.stretchX, + stretchY: options.stretchY, + content: options.content, + textFitHeight: options.textFitHeight, + textFitWidth: options.textFitWidth + }; + + for (const [key, value] of Object.entries(optionsMap)) { + if (image[key] !== value) { + image[key] = value; + changed = true; + } + }
113-117: Fix unused variable warningGood cleanup logic, but there's an unused variable warning.
- for (const [id, _] of loadedImages) { + for (const [id] of loadedImages) {🧰 Tools
🪛 eslint
[error] 114-114: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
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⛔ Files ignored due to path filters (1)
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📒 Files selected for processing (9)
.github/workflows/lint.yml(1 hunks).github/workflows/release.yml(1 hunks)package.json(1 hunks)src/content/examples/Index.svelte(1 hunks)src/content/examples/image-loader/Images.svelte(1 hunks)src/content/examples/image-loader/content.svelte.md(1 hunks)src/lib/maplibre/index.ts(1 hunks)src/lib/maplibre/map/Image.svelte(3 hunks)src/lib/maplibre/utilities/ImageLoader.svelte(1 hunks)
✅ Files skipped from review due to trivial changes (2)
- .github/workflows/lint.yml
- .github/workflows/release.yml
🚧 Files skipped from review as they are similar to previous changes (5)
- src/content/examples/Index.svelte
- src/content/examples/image-loader/Images.svelte
- src/content/examples/image-loader/content.svelte.md
- src/lib/maplibre/index.ts
- src/lib/maplibre/map/Image.svelte
🧰 Additional context used
🪛 eslint
src/lib/maplibre/utilities/ImageLoader.svelte
[error] 13-13: 'maplibregl' is not defined.
(no-undef)
[error] 114-114: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
🔇 Additional comments (7)
package.json (1)
54-54: LGTM! Verify TypeScript compatibility.
The addition of @types/geojson is appropriate for the new GeoJSON-based image loading functionality. The dependency is correctly placed in devDependencies.
Let's verify the compatibility with the project's TypeScript version:
✅ Verification successful
TypeScript and GeoJSON types are compatible and actively used
The @types/geojson dependency is correctly added and is actively used across multiple components in the codebase, particularly in map-related features. The TypeScript version (^5.7.2) is recent and compatible with the GeoJSON type definitions. Several components are already successfully importing and using GeoJSON types without any apparent issues.
- Used in
src/content/examples/image-loader/Images.sveltewith explicit type imports - Integrated in multiple map components like
HoverStyles.svelte,Clusters.svelte, andDynamicImage.svelte - Properly utilized through the
svelte-maplibre-glintegration
🏁 Scripts executed
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Script:
#!/bin/bash
# Description: Check compatibility between @types/geojson and TypeScript versions
# Get the required TypeScript version from the package
TS_VERSION=$(cat package.json | jq -r '.devDependencies.typescript')
# Check npm for @types/geojson version compatibility
curl -s "https://registry.npmjs.org/@types/geojson" | jq --arg ver "$TS_VERSION" '.versions | to_entries[] | select(.value.peerDependencies.typescript? and .value.peerDependencies.typescript != "*") | select(.key == "7946.0.14") | { version: .key, typescript: .value.peerDependencies.typescript }'
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#!/bin/bash
# Let's try a different approach to verify TypeScript compatibility
# First, let's check the TypeScript version in package.json
echo "TypeScript version:"
cat package.json | jq '.devDependencies.typescript'
# Then, let's check the actual @types/geojson entry
echo -e "\n@types/geojson entry:"
cat package.json | jq '.devDependencies["@types/geojson"]'
# Let's also check if there are any TypeScript errors in files using GeoJSON
echo -e "\nFiles importing or using GeoJSON:"
rg -l "geojson" -t typescript
Length of output: 390
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#!/bin/bash
# Let's try one more verification looking for GeoJSON usage
# Search for any files containing GeoJSON references
echo "Files using GeoJSON:"
rg -l "GeoJSON|geojson"
# Also check if there are any existing type errors
echo -e "\nChecking for type-related imports:"
rg "import.*GeoJSON" -A 2
Length of output: 1831
src/lib/maplibre/utilities/ImageLoader.svelte (6)
8-16: LGTM! Well-structured props definition
The props are well-typed and provide good flexibility with optional loading state and children.
🧰 Tools
🪛 eslint
[error] 13-13: 'maplibregl' is not defined.
(no-undef)
18-21: LGTM! Clean state management
Good use of Svelte's state management and Map data structure for tracking loaded images.
120-122: LGTM! Good conditional rendering
Appropriate use of conditional rendering to ensure children are only rendered after images are loaded.
1-3:
Add missing maplibregl import
The type maplibregl.StyleImageMetadata is used but maplibregl is not imported.
Add the following import:
<script lang="ts">
+ import type maplibregl from 'maplibre-gl';
import { onDestroy, type Snippet } from 'svelte';89-99:
Add error handling for image loading failures
The image loading logic lacks error handling which could lead to silent failures.
Add error handling:
tasks.push(
(async () => {
- const image = await mapCtx.map?.loadImage(url);
- if (mapCtx.map?.getImage(id)) {
- mapCtx.map?.removeImage(id);
- }
- if (image && loadedImages.has(id)) {
- mapCtx.map?.addImage(id, image?.data, options);
- }
+ try {
+ const image = await mapCtx.map?.loadImage(url);
+ if (mapCtx.map?.getImage(id)) {
+ mapCtx.map?.removeImage(id);
+ }
+ if (image && loadedImages.has(id)) {
+ mapCtx.map?.addImage(id, image?.data, options);
+ }
+ } catch (error) {
+ console.error(`Failed to load image ${id} from ${url}:`, error);
+ loadedImages.delete(id);
+ }
})()
);102-110:
Fix Promise.allSettled usage and add loading state error handling
The Promise.allSettled usage is incorrect and the loading state doesn't handle errors.
Apply this fix:
if (tasks.length > 0) {
loading = true;
- Promise.allSettled([tasks]).then(() => {
+ Promise.allSettled(tasks).then((results) => {
+ const failures = results.filter(r => r.status === 'rejected');
+ if (failures.length > 0) {
+ console.error(`${failures.length} images failed to load`);
+ }
initialLoaded = true;
loading = false;
});
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (2)
src/lib/maplibre/utilities/ImageLoader.svelte (2)
114-118: Fix unused variable in destructuringThe underscore variable is unused in the destructuring.
Apply this style fix:
-for (const [id, _] of loadedImages) { +for (const [id] of loadedImages) {🧰 Tools
🪛 eslint
[error] 115-115: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
90-100: Consider adding retry logic for image loadingFor improved reliability, especially in poor network conditions, consider implementing retry logic for failed image loads. This could be done using an exponential backoff strategy.
Would you like me to provide an implementation example with retry logic?
📜 Review details
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Review profile: CHILL
📒 Files selected for processing (1)
src/lib/maplibre/utilities/ImageLoader.svelte(1 hunks)
🧰 Additional context used
🪛 eslint
src/lib/maplibre/utilities/ImageLoader.svelte
[error] 115-115: '_' is assigned a value but never used.
(@typescript-eslint/no-unused-vars)
🔇 Additional comments (4)
src/lib/maplibre/utilities/ImageLoader.svelte (4)
1-18: LGTM! Well-structured component setup
The component setup is well-organized with proper TypeScript types, necessary imports, and appropriate map context validation.
19-23: LGTM! Clean state management
The state management approach using a combination of Svelte state and Map is clean and effective.
121-123: LGTM! Clean conditional rendering
The conditional rendering ensures children components are only rendered after images are loaded, which is the correct approach.
89-100:
Add error handling for image loading failures
The image loading logic lacks proper error handling which could lead to silent failures.
Add try-catch blocks and error reporting:
tasks.push(
(async () => {
+ try {
const image = await mapCtx.map?.loadImage(url);
if (mapCtx.map?.getImage(id)) {
mapCtx.map?.removeImage(id);
}
if (image && loadedImages.has(id)) {
mapCtx.map?.addImage(id, image?.data, options);
}
+ } catch (error) {
+ console.error(`Failed to load image ${id} from ${url}:`, error);
+ loadedImages.delete(id);
+ }
})()
);
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Close #26
Summary by CodeRabbit
Release Notes
New Features
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