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{\n Feature,\n FeatureCollection,\n Geometry,\n LineString,\n MultiPoint,\n MultiLineString,\n MultiPolygon,\n Point,\n Polygon,\n} from \"geojson\";\nimport { isNumber } from \"@turf/helpers\";\n\n/**\n * Unwrap a coordinate from a Point Feature, Geometry or a single coordinate.\n *\n * @name getCoord\n * @param {Array|Geometry|Feature} coord GeoJSON Point or an Array of numbers\n * @returns {Array} coordinates\n * @example\n * var pt = turf.point([10, 10]);\n *\n * var coord = turf.getCoord(pt);\n * //= [10, 10]\n */\nfunction getCoord(coord: Feature | Point | number[]): number[] {\n if (!coord) {\n throw new Error(\"coord is required\");\n }\n\n if (!Array.isArray(coord)) {\n if (\n coord.type === \"Feature\" &&\n coord.geometry !== null &&\n coord.geometry.type === \"Point\"\n ) {\n return [...coord.geometry.coordinates];\n }\n if (coord.type === \"Point\") {\n return [...coord.coordinates];\n }\n }\n if (\n Array.isArray(coord) &&\n coord.length >= 2 &&\n !Array.isArray(coord[0]) &&\n !Array.isArray(coord[1])\n ) {\n return [...coord];\n }\n\n throw new Error(\"coord must be GeoJSON Point or an Array of numbers\");\n}\n\n/**\n * Unwrap coordinates from a Feature, Geometry Object or an Array\n *\n * @name getCoords\n * @param {Array|Geometry|Feature} coords Feature, Geometry Object or an Array\n * @returns {Array} coordinates\n * @example\n * var poly = turf.polygon([[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]);\n *\n * var coords = turf.getCoords(poly);\n * //= [[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]\n */\nfunction getCoords<\n G extends\n | Point\n | LineString\n | Polygon\n | MultiPoint\n | MultiLineString\n | MultiPolygon,\n>(coords: any[] | Feature | G): any[] {\n if (Array.isArray(coords)) {\n return coords;\n }\n\n // Feature\n if (coords.type === \"Feature\") {\n if (coords.geometry !== null) {\n return coords.geometry.coordinates;\n }\n } else {\n // Geometry\n if (coords.coordinates) {\n return coords.coordinates;\n }\n }\n\n throw new Error(\n \"coords must be GeoJSON Feature, Geometry Object or an Array\"\n );\n}\n\n/**\n * Checks if coordinates contains a number\n *\n * @name containsNumber\n * @param {Array} coordinates GeoJSON Coordinates\n * @returns {boolean} true if Array contains a number\n */\nfunction containsNumber(coordinates: any[]): boolean {\n if (\n coordinates.length > 1 &&\n isNumber(coordinates[0]) &&\n isNumber(coordinates[1])\n ) {\n return true;\n }\n\n if (Array.isArray(coordinates[0]) && coordinates[0].length) {\n return containsNumber(coordinates[0]);\n }\n throw new Error(\"coordinates must only contain numbers\");\n}\n\n/**\n * Enforce expectations about types of GeoJSON objects for Turf.\n *\n * @name geojsonType\n * @param {GeoJSON} value any GeoJSON object\n * @param {string} type expected GeoJSON type\n * @param {string} name name of calling function\n * @throws {Error} if value is not the expected type.\n */\nfunction geojsonType(value: any, type: string, name: string): void {\n if (!type || !name) {\n throw new Error(\"type and name required\");\n }\n\n if (!value || value.type !== type) {\n throw new Error(\n \"Invalid input to \" +\n name +\n \": must be a \" +\n type +\n \", given \" +\n value.type\n );\n }\n}\n\n/**\n * Enforce expectations about types of {@link Feature} inputs for Turf.\n * Internally this uses {@link geojsonType} to judge geometry types.\n *\n * @name featureOf\n * @param {Feature} feature a feature with an expected geometry type\n * @param {string} type expected GeoJSON type\n * @param {string} name name of calling function\n * @throws {Error} error if value is not the expected type.\n */\nfunction featureOf(feature: Feature, type: string, name: string): void {\n if (!feature) {\n throw new Error(\"No feature passed\");\n }\n if (!name) {\n throw new Error(\".featureOf() requires a name\");\n }\n if (!feature || feature.type !== \"Feature\" || !feature.geometry) {\n throw new Error(\n \"Invalid input to \" + name + \", Feature with geometry required\"\n );\n }\n if (!feature.geometry || feature.geometry.type !== type) {\n throw new Error(\n \"Invalid input to \" +\n name +\n \": must be a \" +\n type +\n \", given \" +\n feature.geometry.type\n );\n }\n}\n\n/**\n * Enforce expectations about types of {@link FeatureCollection} inputs for Turf.\n * Internally this uses {@link geojsonType} to judge geometry types.\n *\n * @name collectionOf\n * @param {FeatureCollection} featureCollection a FeatureCollection for which features will be judged\n * @param {string} type expected GeoJSON type\n * @param {string} name name of calling function\n * @throws {Error} if value is not the expected type.\n */\nfunction collectionOf(\n featureCollection: FeatureCollection,\n type: string,\n name: string\n) {\n if (!featureCollection) {\n throw new Error(\"No featureCollection passed\");\n }\n if (!name) {\n throw new Error(\".collectionOf() requires a name\");\n }\n if (!featureCollection || featureCollection.type !== \"FeatureCollection\") {\n throw new Error(\n \"Invalid input to \" + name + \", FeatureCollection required\"\n );\n }\n for (const feature of featureCollection.features) {\n if (!feature || feature.type !== \"Feature\" || !feature.geometry) {\n throw new Error(\n \"Invalid input to \" + name + \", Feature with geometry required\"\n );\n }\n if (!feature.geometry || feature.geometry.type !== type) {\n throw new Error(\n \"Invalid input to \" +\n name +\n \": must be a \" +\n type +\n \", given \" +\n feature.geometry.type\n );\n }\n }\n}\n\n/**\n * Get Geometry from Feature or Geometry Object\n *\n * @param {Feature|Geometry} geojson GeoJSON Feature or Geometry Object\n * @returns {Geometry|null} GeoJSON Geometry Object\n * @throws {Error} if geojson is not a Feature or Geometry Object\n * @example\n * var point = {\n * \"type\": \"Feature\",\n * \"properties\": {},\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [110, 40]\n * }\n * }\n * var geom = turf.getGeom(point)\n * //={\"type\": \"Point\", \"coordinates\": [110, 40]}\n */\nfunction getGeom(geojson: Feature | G): G {\n if (geojson.type === \"Feature\") {\n return geojson.geometry;\n }\n return geojson;\n}\n\n/**\n * Get GeoJSON object's type, Geometry type is prioritize.\n *\n * @param {GeoJSON} geojson GeoJSON object\n * @param {string} [name=\"geojson\"] name of the variable to display in error message (unused)\n * @returns {string} GeoJSON type\n * @example\n * var point = {\n * \"type\": \"Feature\",\n * \"properties\": {},\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [110, 40]\n * }\n * }\n * var geom = turf.getType(point)\n * //=\"Point\"\n */\nfunction getType(\n geojson: Feature | FeatureCollection | Geometry,\n _name?: string\n): string {\n if (geojson.type === \"FeatureCollection\") {\n return \"FeatureCollection\";\n }\n if (geojson.type === \"GeometryCollection\") {\n return \"GeometryCollection\";\n }\n if (geojson.type === \"Feature\" && geojson.geometry !== null) {\n return geojson.geometry.type;\n }\n return geojson.type;\n}\n\nexport {\n getCoord,\n getCoords,\n containsNumber,\n geojsonType,\n featureOf,\n collectionOf,\n getGeom,\n getType,\n};\n// No default export!\n"]}