リファレンス

データの入口（自分で用意した星やディープスカイ天体を、ライセンスと出典つきのソースとして渡し、いま画面にあるのは誰のデータかを示します）

import { … } from "@johnmorrisdotca/hoshi-stars/door";

最小化と gzip 圧縮をしたサイズは 7.0 kB（読み込むものをすべて含み、esbuild で計測）

リファレンスの説明と例は英語です。見出しと目次は日本語です。

エクスポート

名前	種類	概要
`BitmapLike`	型	What a picture needs of its bitmap: an `ImageBitmap` fits.
`createTileStore`	関数	A tile store for a view: loads the tiles of every source by key and keeps them under one budget of bytes (default 48 MB, all sources together).
`Credit`	型	One source's part in the last drawn frame.
`creditLine`	関数	The credit line for what a view drew: each source's credit with its licence name, and "non-commercial" or "share-alike" whenever the source says so, so a page cannot hide the terms of the data it uses.
`DataSource`	型	Either kind of source.
`ImageTile`	型	A map tile: its size in pixels and its picture.
`Licence`	型	A licence: its name and a link are always shown beside the credit.
`loadRecords`	関数	Reads a record source once, when it is added: the list is frozen, a record with a non-finite number (a `NaN` or an infinity in any number `finite` names) is skipped and counted, and a list over `MAX_RECORDS` is refused whole (bigger data must be tiles).
`MapPlace`	型	A piece of a map, in degrees: longitude and latitude (right ascension and declination for the sky).
`MAX_IN_FLIGHT`	定数	The most loads in flight at once for one source.
`MAX_RECORDS`	定数	The most records a record source may hold.
`ObjectSource`	型	A source of deep-sky objects: a list that fits in memory (at most 200,000 records), read once.
`ObjectsRead`	型	What `withObjects` found.
`OWN_SOURCES`	定数	The package's own data, as sources, written from the rows of `NOTICE.md`: the Yale Bright Star Catalogue, UCAC4 and the deep-sky list from Wikidata.
`ownCredit`	関数	The credit of one of the package's own sources, for the part of a page the door does not draw: the bright stars of the Yale catalogue are drawn from the main entry, so a page puts `ownCredit("yale-bsc", count)` first in its credit line.
`RecordSource`	型	A list that fits in memory (at most `MAX_RECORDS` records; bigger data must be tiles).
`RecordsRead`	型	What `loadRecords` found.
`SkyPictureSource`	型	A source of a picture of the sky in tiles (a survey, an all-sky photograph): a map source, which uses the family's one map shape.
`SourceInfo`	型	What a source says about itself.
`starSky`	関数	The faint stars of a page, from any number of tile sources: the door's view of the sky.
`StarSky`	型	The faint stars of a page from any number of sources: loads the tiles a patch needs from each and answers from the ones it has.
`StarSkyOptions`	型	What `starSky` takes.
`StarSource`	型	A source of stars in tiles: the place is a round patch of sky (`FaintField`), the detail is the faintest magnitude wanted, and a tile is the decoded `FaintTile` (parallel arrays of right ascension, declination, magnitude and B-V).
`TILE_BUDGET_BYTES`	定数	The default budget for decoded tiles in a view, all sources together: 48 MB (a picture counts with its mipmaps, 4/3 of its bytes).
`TileFetch`	型	A `fetch` as the loaders use it: the address and, for a stop, a signal.
`TileLoader`	型	The part of a tile source the store uses.
`TileSource`	型	Data cut by place and by detail.
`TileStats`	型	What a tile store has done.
`TileStore`	型	A tile store: tiles by source and key, under one byte budget.
`TileStoreOptions`	型	Options for `createTileStore`.
`Ucac4Options`	型	What `ucac4Source` takes.
`ucac4Source`	関数	The package's own faint stars, UCAC4 to magnitude 12 in sky tiles, as a source: what `faintSky` has always loaded, through the door.
`validateSource`	関数	Refuses a source that cannot be shown honestly: it throws a `TypeError` at once, when a source is added, not at the first draw.
`withObjects`	関数	Adds the deep-sky objects of outside sources to the page's own.

ソースを見る GitHub で編集@johnmorrisdotca/hoshi-stars 0.47.0 のソースから作成しました。

この日本語は、まだ日本語を母語とする方の確認を受けていません。訂正を歓迎します。