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js: maplibre protocol has option to throw on missing tile [#321] (#505)

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* js: maplibre protocol has option to throw on missing tile [#321]

* js: update docs copy for errorOnMissingTile

* js: 4.1.0
This commit is contained in:
Brandon Liu
2024-12-15 16:49:56 +08:00
committed by GitHub
parent 5b075048cc
commit 9a53ed8495
8 changed files with 20 additions and 8 deletions
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10
js/src/adapters.ts
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@@ -167,16 +167,21 @@ export class Protocol {
/** @hidden */
tiles: Map<string, PMTiles>;
metadata: boolean;
errorOnMissingTile: boolean;
/**
* Initialize the MapLibre PMTiles protocol.
*
* * metadata: also load the metadata section of the PMTiles. required for some "inspect" functionality
* and to automatically populate the map attribution. Requires an extra HTTP request.
* * errorOnMissingTile: When a vector MVT tile is missing from the archive, raise an error instead of
* returning the empty array. Not recommended. This is only to reproduce the behavior of ZXY tile APIs
* which some applications depend on when overzooming.
*/
constructor(options?: { metadata: boolean }) {
constructor(options?: { metadata?: boolean; errorOnMissingTile?: boolean }) {
this.tiles = new Map<string, PMTiles>();
this.metadata = options?.metadata || false;
this.errorOnMissingTile = options?.errorOnMissingTile || false;
}
/**
@@ -251,6 +256,9 @@ export class Protocol {
};
}
if (header.tileType === TileType.Mvt) {
if (this.errorOnMissingTile) {
throw new Error("Tile not found.");
}
return { data: new Uint8Array() };
}
return { data: null };