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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.geobuf = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return="" r})()({1:[function(require,module,exports){="" 'use="" strict';="" module.exports="decode;" var="" keys,="" values,="" lengths,="" dim,="" e;="" geometrytypes="[" 'point',="" 'multipoint',="" 'linestring',="" 'multilinestring',="" 'polygon',="" 'multipolygon',="" 'geometrycollection'];="" function="" decode(pbf)="" {="" dim="2;" e="Math.pow(10," 6);="" lengths="null;" keys="[];" values="[];" obj="pbf.readFields(readDataField," {});="" return="" obj;="" }="" readdatafield(tag,="" obj,="" pbf)="" if="" (tag="==" 1)="" keys.push(pbf.readstring());="" else="" 2)="" 3)="" pbf.readvarint());="" 4)="" readfeaturecollection(pbf,="" obj);="" 5)="" readfeature(pbf,="" 6)="" readgeometry(pbf,="" obj)="" obj.type="FeatureCollection" ;="" obj.features="[];" pbf.readmessage(readfeaturecollectionfield,="" feature)="" feature.type="Feature" f="pbf.readMessage(readFeatureField," feature);="" (!('geometry'="" in="" f))="" f.geometry="null;" f;="" geom)="" geom.type="Point" pbf.readmessage(readgeometryfield,="" geom);="" readfeaturecollectionfield(tag,="" obj.features.push(readfeature(pbf,="" {}));="" 13)="" values.push(readvalue(pbf));="" 15)="" readprops(pbf,="" readfeaturefield(tag,="" feature,="" feature.geometry="readGeometry(pbf," 11)="" feature.id="pbf.readString();" 12)="" 14)="" feature.properties="readProps(pbf," readgeometryfield(tag,="" geom,="" readcoords(geom,="" pbf,="" geom.type);="" geom.geometries="geom.geometries" ||="" [];="" geom.geometries.push(readgeometry(pbf,="" type)="" (type="==" 'point')="" geom.coordinates="readPoint(pbf);" 'multipoint')="" true);="" 'linestring')="" 'multilinestring')="" 'polygon')="" 'multipolygon')="" readvalue(pbf)="" end="pbf.readVarint()" +="" pbf.pos,="" value="null;" while="" (pbf.pos="" <="" end)="" val="pbf.readVarint()," tag="val">> 3; if (tag === 1) value = pbf.readString(); else if (tag === 2) value = pbf.readDouble(); else if (tag === 3) value = pbf.readVarint(); else if (tag === 4) value = -pbf.readVarint(); else if (tag === 5) value = pbf.readBoolean(); else if (tag === 6) value = JSON.parse(pbf.readString()); } return value; } function readProps(pbf, props) { var end = pbf.readVarint() + pbf.pos; while (pbf.pos < end) props[keys[pbf.readVarint()]] = values[pbf.readVarint()]; values = []; return props; } function readPoint(pbf) { var end = pbf.readVarint() + pbf.pos, coords = []; while (pbf.pos < end) coords.push(pbf.readSVarint() / e); return coords; } function readLinePart(pbf, end, len, closed) { var i = 0, coords = [], p, d; var prevP = []; for (d = 0; d < dim; d++) prevP[d] = 0; while (len ? i < len : pbf.pos < end) { p = []; for (d = 0; d < dim; d++) { prevP[d] += pbf.readSVarint(); p[d] = prevP[d] / e; } coords.push(p); i++; } if (closed) coords.push(coords[0]); return coords; } function readLine(pbf) { return readLinePart(pbf, pbf.readVarint() + pbf.pos); } function readMultiLine(pbf, closed) { var end = pbf.readVarint() + pbf.pos; if (!lengths) return [readLinePart(pbf, end, null, closed)]; var coords = []; for (var i = 0; i < lengths.length; i++) coords.push(readLinePart(pbf, end, lengths[i], closed)); lengths = null; return coords; } function readMultiPolygon(pbf) { var end = pbf.readVarint() + pbf.pos; if (!lengths) return [[readLinePart(pbf, end, null, true)]]; var coords = []; var j = 1; for (var i = 0; i < lengths[0]; i++) { var rings = []; for (var k = 0; k < lengths[j]; k++) rings.push(readLinePart(pbf, end, lengths[j + 1 + k], true)); j += lengths[j] + 1; coords.push(rings); } lengths = null; return coords; } },{}],2:[function(require,module,exports){ 'use strict'; module.exports = encode; var keys, keysNum, keysArr, dim, e, maxPrecision = 1e6; var geometryTypes = { 'Point': 0, 'MultiPoint': 1, 'LineString': 2, 'MultiLineString': 3, 'Polygon': 4, 'MultiPolygon': 5, 'GeometryCollection': 6 }; function encode(obj, pbf) { keys = {}; keysArr = []; keysNum = 0; dim = 0; e = 1; analyze(obj); e = Math.min(e, maxPrecision); var precision = Math.ceil(Math.log(e) / Math.LN10); for (var i = 0; i < keysArr.length; i++) pbf.writeStringField(1, keysArr[i]); if (dim !== 2) pbf.writeVarintField(2, dim); if (precision !== 6) pbf.writeVarintField(3, precision); if (obj.type === 'FeatureCollection') pbf.writeMessage(4, writeFeatureCollection, obj); else if (obj.type === 'Feature') pbf.writeMessage(5, writeFeature, obj); else pbf.writeMessage(6, writeGeometry, obj); keys = null; return pbf.finish(); } function analyze(obj) { var i, key; if (obj.type === 'FeatureCollection') { for (i = 0; i < obj.features.length; i++) analyze(obj.features[i]); } else if (obj.type === 'Feature') { if (obj.geometry !== null) analyze(obj.geometry); for (key in obj.properties) saveKey(key); } else if (obj.type === 'Point') analyzePoint(obj.coordinates); else if (obj.type === 'MultiPoint') analyzePoints(obj.coordinates); else if (obj.type === 'GeometryCollection') { for (i = 0; i < obj.geometries.length; i++) analyze(obj.geometries[i]); } else if (obj.type === 'LineString') analyzePoints(obj.coordinates); else if (obj.type === 'Polygon' || obj.type === 'MultiLineString') analyzeMultiLine(obj.coordinates); else if (obj.type === 'MultiPolygon') { for (i = 0; i < obj.coordinates.length; i++) analyzeMultiLine(obj.coordinates[i]); } for (key in obj) { if (!isSpecialKey(key, obj.type)) saveKey(key); } } function analyzeMultiLine(coords) { for (var i = 0; i < coords.length; i++) analyzePoints(coords[i]); } function analyzePoints(coords) { for (var i = 0; i < coords.length; i++) analyzePoint(coords[i]); } function analyzePoint(point) { dim = Math.max(dim, point.length); // find max precision for (var i = 0; i < point.length; i++) { while (Math.round(point[i] * e) / e !== point[i] && e < maxPrecision) e *= 10; } } function saveKey(key) { if (keys[key] === undefined) { keysArr.push(key); keys[key] = keysNum++; } } function writeFeatureCollection(obj, pbf) { for (var i = 0; i < obj.features.length; i++) { pbf.writeMessage(1, writeFeature, obj.features[i]); } writeProps(obj, pbf, true); } function writeFeature(feature, pbf) { if (feature.geometry !== null) pbf.writeMessage(1, writeGeometry, feature.geometry); if (feature.id !== undefined) { if (typeof feature.id === 'number' && feature.id % 1 === 0) pbf.writeSVarintField(12, feature.id); else pbf.writeStringField(11, feature.id); } if (feature.properties) writeProps(feature.properties, pbf); writeProps(feature, pbf, true); } function writeGeometry(geom, pbf) { pbf.writeVarintField(1, geometryTypes[geom.type]); var coords = geom.coordinates; if (geom.type === 'Point') writePoint(coords, pbf); else if (geom.type === 'MultiPoint') writeLine(coords, pbf, true); else if (geom.type === 'LineString') writeLine(coords, pbf); else if (geom.type === 'MultiLineString') writeMultiLine(coords, pbf); else if (geom.type === 'Polygon') writeMultiLine(coords, pbf, true); else if (geom.type === 'MultiPolygon') writeMultiPolygon(coords, pbf); else if (geom.type === 'GeometryCollection') { for (var i = 0; i < geom.geometries.length; i++) pbf.writeMessage(4, writeGeometry, geom.geometries[i]); } writeProps(geom, pbf, true); } function writeProps(props, pbf, isCustom) { var indexes = [], valueIndex = 0; for (var key in props) { if (isCustom && isSpecialKey(key, props.type)) { continue; } pbf.writeMessage(13, writeValue, props[key]); indexes.push(keys[key]); indexes.push(valueIndex++); } pbf.writePackedVarint(isCustom ? 15 : 14, indexes); } function writeValue(value, pbf) { if (value === null) return; var type = typeof value; if (type === 'string') pbf.writeStringField(1, value); else if (type === 'boolean') pbf.writeBooleanField(5, value); else if (type === 'object') pbf.writeStringField(6, JSON.stringify(value)); else if (type === 'number') { if (value % 1 !== 0) pbf.writeDoubleField(2, value); else if (value >= 0) pbf.writeVarintField(3, value); else pbf.writeVarintField(4, -value); } } function writePoint(point, pbf) { var coords = []; for (var i = 0; i < dim; i++) coords.push(Math.round(point[i] * e)); pbf.writePackedSVarint(3, coords); } function writeLine(line, pbf) { var coords = []; populateLine(coords, line); pbf.writePackedSVarint(3, coords); } function writeMultiLine(lines, pbf, closed) { var len = lines.length, i; if (len !== 1) { var lengths = []; for (i = 0; i < len; i++) lengths.push(lines[i].length - (closed ? 1 : 0)); pbf.writePackedVarint(2, lengths); // TODO faster with custom writeMessage? } var coords = []; for (i = 0; i < len; i++) populateLine(coords, lines[i], closed); pbf.writePackedSVarint(3, coords); } function writeMultiPolygon(polygons, pbf) { var len = polygons.length, i, j; if (len !== 1 || polygons[0].length !== 1) { var lengths = [len]; for (i = 0; i < len; i++) { lengths.push(polygons[i].length); for (j = 0; j < polygons[i].length; j++) lengths.push(polygons[i][j].length - 1); } pbf.writePackedVarint(2, lengths); } var coords = []; for (i = 0; i < len; i++) { for (j = 0; j < polygons[i].length; j++) populateLine(coords, polygons[i][j], true); } pbf.writePackedSVarint(3, coords); } function populateLine(coords, line, closed) { var i, j, len = line.length - (closed ? 1 : 0), sum = new Array(dim); for (j = 0; j < dim; j++) sum[j] = 0; for (i = 0; i < len; i++) { for (j = 0; j < dim; j++) { var n = Math.round(line[i][j] * e) - sum[j]; coords.push(n); sum[j] += n; } } } function isSpecialKey(key, type) { if (key === 'type') return true; else if (type === 'FeatureCollection') { if (key === 'features') return true; } else if (type === 'Feature') { if (key === 'id' || key === 'properties' || key === 'geometry') return true; } else if (type === 'GeometryCollection') { if (key === 'geometries') return true; } else if (key === 'coordinates') return true; return false; } },{}],3:[function(require,module,exports){ 'use strict'; exports.encode = require('./encode'); exports.decode = require('./decode'); },{"./decode":1,"./encode":2}]},{},[3])(3) }); //# 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r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c=\"function\"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error(\"Cannot find module '\"+i+\"'\");throw a.code=\"MODULE_NOT_FOUND\",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u=\"function\"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()","'use strict';\n\nmodule.exports = decode;\n\nvar keys, values, lengths, dim, e;\n\nvar geometryTypes = [\n    'Point', 'MultiPoint', 'LineString', 'MultiLineString',\n    'Polygon', 'MultiPolygon', 'GeometryCollection'];\n\nfunction decode(pbf) {\n    dim = 2;\n    e = Math.pow(10, 6);\n    lengths = null;\n\n    keys = [];\n    values = [];\n    var obj = pbf.readFields(readDataField, {});\n    keys = null;\n\n    return obj;\n}\n\nfunction readDataField(tag, obj, pbf) {\n    if (tag === 1) keys.push(pbf.readString());\n    else if (tag === 2) dim = pbf.readVarint();\n    else if (tag === 3) e = Math.pow(10, pbf.readVarint());\n\n    else if (tag === 4) readFeatureCollection(pbf, obj);\n    else if (tag === 5) readFeature(pbf, obj);\n    else if (tag === 6) readGeometry(pbf, obj);\n}\n\nfunction readFeatureCollection(pbf, obj) {\n    obj.type = 'FeatureCollection';\n    obj.features = [];\n    return pbf.readMessage(readFeatureCollectionField, obj);\n}\n\nfunction readFeature(pbf, feature) {\n    feature.type = 'Feature';\n    var f = pbf.readMessage(readFeatureField, feature);\n    if (!('geometry' in f)) f.geometry = null;\n    return f;\n}\n\nfunction readGeometry(pbf, geom) {\n    geom.type = 'Point';\n    return pbf.readMessage(readGeometryField, geom);\n}\n\nfunction readFeatureCollectionField(tag, obj, pbf) {\n    if (tag === 1) obj.features.push(readFeature(pbf, {}));\n\n    else if (tag === 13) values.push(readValue(pbf));\n    else if (tag === 15) readProps(pbf, obj);\n}\n\nfunction readFeatureField(tag, feature, pbf) {\n    if (tag === 1) feature.geometry = readGeometry(pbf, {});\n\n    else if (tag === 11) feature.id = pbf.readString();\n    else if (tag === 12) feature.id = pbf.readSVarint();\n\n    else if (tag === 13) values.push(readValue(pbf));\n    else if (tag === 14) feature.properties = readProps(pbf, {});\n    else if (tag === 15) readProps(pbf, feature);\n}\n\nfunction readGeometryField(tag, geom, pbf) {\n    if (tag === 1) geom.type = geometryTypes[pbf.readVarint()];\n\n    else if (tag === 2) lengths = pbf.readPackedVarint();\n    else if (tag === 3) readCoords(geom, pbf, geom.type);\n    else if (tag === 4) {\n        geom.geometries = geom.geometries || [];\n        geom.geometries.push(readGeometry(pbf, {}));\n    }\n    else if (tag === 13) values.push(readValue(pbf));\n    else if (tag === 15) readProps(pbf, geom);\n}\n\nfunction readCoords(geom, pbf, type) {\n    if (type === 'Point') geom.coordinates = readPoint(pbf);\n    else if (type === 'MultiPoint') geom.coordinates = readLine(pbf, true);\n    else if (type === 'LineString') geom.coordinates = readLine(pbf);\n    else if (type === 'MultiLineString') geom.coordinates = readMultiLine(pbf);\n    else if (type === 'Polygon') geom.coordinates = readMultiLine(pbf, true);\n    else if (type === 'MultiPolygon') geom.coordinates = readMultiPolygon(pbf);\n}\n\nfunction readValue(pbf) {\n    var end = pbf.readVarint() + pbf.pos,\n        value = null;\n\n    while (pbf.pos < end) {\n        var val = pbf.readVarint(),\n            tag = val >> 3;\n\n        if (tag === 1) value = pbf.readString();\n        else if (tag === 2) value = pbf.readDouble();\n        else if (tag === 3) value = pbf.readVarint();\n        else if (tag === 4) value = -pbf.readVarint();\n        else if (tag === 5) value = pbf.readBoolean();\n        else if (tag === 6) value = JSON.parse(pbf.readString());\n    }\n    return value;\n}\n\nfunction readProps(pbf, props) {\n    var end = pbf.readVarint() + pbf.pos;\n    while (pbf.pos < end) props[keys[pbf.readVarint()]] = values[pbf.readVarint()];\n    values = [];\n    return props;\n}\n\nfunction readPoint(pbf) {\n    var end = pbf.readVarint() + pbf.pos,\n        coords = [];\n    while (pbf.pos < end) coords.push(pbf.readSVarint() / e);\n    return coords;\n}\n\nfunction readLinePart(pbf, end, len, closed) {\n    var i = 0,\n        coords = [],\n        p, d;\n\n    var prevP = [];\n    for (d = 0; d < dim; d++) prevP[d] = 0;\n\n    while (len ? i < len : pbf.pos < end) {\n        p = [];\n        for (d = 0; d < dim; d++) {\n            prevP[d] += pbf.readSVarint();\n            p[d] = prevP[d] / e;\n        }\n        coords.push(p);\n        i++;\n    }\n    if (closed) coords.push(coords[0]);\n\n    return coords;\n}\n\nfunction readLine(pbf) {\n    return readLinePart(pbf, pbf.readVarint() + pbf.pos);\n}\n\nfunction readMultiLine(pbf, closed) {\n    var end = pbf.readVarint() + pbf.pos;\n    if (!lengths) return [readLinePart(pbf, end, null, closed)];\n\n    var coords = [];\n    for (var i = 0; i < lengths.length; i++) coords.push(readLinePart(pbf, end, lengths[i], closed));\n    lengths = null;\n    return coords;\n}\n\nfunction readMultiPolygon(pbf) {\n    var end = pbf.readVarint() + pbf.pos;\n    if (!lengths) return [[readLinePart(pbf, end, null, true)]];\n\n    var coords = [];\n    var j = 1;\n    for (var i = 0; i < lengths[0]; i++) {\n        var rings = [];\n        for (var k = 0; k < lengths[j]; k++) rings.push(readLinePart(pbf, end, lengths[j + 1 + k], true));\n        j += lengths[j] + 1;\n        coords.push(rings);\n    }\n    lengths = null;\n    return coords;\n}\n","'use strict';\n\nmodule.exports = encode;\n\nvar keys, keysNum, keysArr, dim, e,\n    maxPrecision = 1e6;\n\nvar geometryTypes = {\n    'Point': 0,\n    'MultiPoint': 1,\n    'LineString': 2,\n    'MultiLineString': 3,\n    'Polygon': 4,\n    'MultiPolygon': 5,\n    'GeometryCollection': 6\n};\n\nfunction encode(obj, pbf) {\n    keys = {};\n    keysArr = [];\n    keysNum = 0;\n    dim = 0;\n    e = 1;\n\n    analyze(obj);\n\n    e = Math.min(e, maxPrecision);\n    var precision = Math.ceil(Math.log(e) / Math.LN10);\n\n    for (var i = 0; i < keysArr.length; i++) pbf.writeStringField(1, keysArr[i]);\n    if (dim !== 2) pbf.writeVarintField(2, dim);\n    if (precision !== 6) pbf.writeVarintField(3, precision);\n\n    if (obj.type === 'FeatureCollection') pbf.writeMessage(4, writeFeatureCollection, obj);\n    else if (obj.type === 'Feature') pbf.writeMessage(5, writeFeature, obj);\n    else pbf.writeMessage(6, writeGeometry, obj);\n\n    keys = null;\n\n    return pbf.finish();\n}\n\nfunction analyze(obj) {\n    var i, key;\n\n    if (obj.type === 'FeatureCollection') {\n        for (i = 0; i < obj.features.length; i++) analyze(obj.features[i]);\n\n    } else if (obj.type === 'Feature') {\n        if (obj.geometry !== null) analyze(obj.geometry);\n        for (key in obj.properties) saveKey(key);\n\n    } else if (obj.type === 'Point') analyzePoint(obj.coordinates);\n    else if (obj.type === 'MultiPoint') analyzePoints(obj.coordinates);\n    else if (obj.type === 'GeometryCollection') {\n        for (i = 0; i < obj.geometries.length; i++) analyze(obj.geometries[i]);\n    }\n    else if (obj.type === 'LineString') analyzePoints(obj.coordinates);\n    else if (obj.type === 'Polygon' || obj.type === 'MultiLineString') analyzeMultiLine(obj.coordinates);\n    else if (obj.type === 'MultiPolygon') {\n        for (i = 0; i < obj.coordinates.length; i++) analyzeMultiLine(obj.coordinates[i]);\n    }\n\n    for (key in obj) {\n        if (!isSpecialKey(key, obj.type)) saveKey(key);\n    }\n}\n\nfunction analyzeMultiLine(coords) {\n    for (var i = 0; i < coords.length; i++) analyzePoints(coords[i]);\n}\n\nfunction analyzePoints(coords) {\n    for (var i = 0; i < coords.length; i++) analyzePoint(coords[i]);\n}\n\nfunction analyzePoint(point) {\n    dim = Math.max(dim, point.length);\n\n    // find max precision\n    for (var i = 0; i < point.length; i++) {\n        while (Math.round(point[i] * e) / e !== point[i] && e < maxPrecision) e *= 10;\n    }\n}\n\nfunction saveKey(key) {\n    if (keys[key] === undefined) {\n        keysArr.push(key);\n        keys[key] = keysNum++;\n    }\n}\n\nfunction writeFeatureCollection(obj, pbf) {\n    for (var i = 0; i < obj.features.length; i++) {\n        pbf.writeMessage(1, writeFeature, obj.features[i]);\n    }\n    writeProps(obj, pbf, true);\n}\n\nfunction writeFeature(feature, pbf) {\n    if (feature.geometry !== null) pbf.writeMessage(1, writeGeometry, feature.geometry);\n\n    if (feature.id !== undefined) {\n        if (typeof feature.id === 'number' && feature.id % 1 === 0) pbf.writeSVarintField(12, feature.id);\n        else pbf.writeStringField(11, feature.id);\n    }\n\n    if (feature.properties) writeProps(feature.properties, pbf);\n    writeProps(feature, pbf, true);\n}\n\nfunction writeGeometry(geom, pbf) {\n    pbf.writeVarintField(1, geometryTypes[geom.type]);\n\n    var coords = geom.coordinates;\n\n    if (geom.type === 'Point') writePoint(coords, pbf);\n    else if (geom.type === 'MultiPoint') writeLine(coords, pbf, true);\n    else if (geom.type === 'LineString') writeLine(coords, pbf);\n    else if (geom.type === 'MultiLineString') writeMultiLine(coords, pbf);\n    else if (geom.type === 'Polygon') writeMultiLine(coords, pbf, true);\n    else if (geom.type === 'MultiPolygon') writeMultiPolygon(coords, pbf);\n    else if (geom.type === 'GeometryCollection') {\n        for (var i = 0; i < geom.geometries.length; i++) pbf.writeMessage(4, writeGeometry, geom.geometries[i]);\n    }\n\n    writeProps(geom, pbf, true);\n}\n\nfunction writeProps(props, pbf, isCustom) {\n    var indexes = [],\n        valueIndex = 0;\n\n    for (var key in props) {\n        if (isCustom && isSpecialKey(key, props.type)) {\n            continue;\n        }\n        pbf.writeMessage(13, writeValue, props[key]);\n        indexes.push(keys[key]);\n        indexes.push(valueIndex++);\n    }\n    pbf.writePackedVarint(isCustom ? 15 : 14, indexes);\n}\n\nfunction writeValue(value, pbf) {\n    if (value === null) return;\n\n    var type = typeof value;\n\n    if (type === 'string') pbf.writeStringField(1, value);\n    else if (type === 'boolean') pbf.writeBooleanField(5, value);\n    else if (type === 'object') pbf.writeStringField(6, JSON.stringify(value));\n    else if (type === 'number') {\n        if (value % 1 !== 0) pbf.writeDoubleField(2, value);\n        else if (value >= 0) pbf.writeVarintField(3, value);\n        else pbf.writeVarintField(4, -value);\n    }\n}\n\nfunction writePoint(point, pbf) {\n    var coords = [];\n    for (var i = 0; i < dim; i++) coords.push(Math.round(point[i] * e));\n    pbf.writePackedSVarint(3, coords);\n}\n\nfunction writeLine(line, pbf) {\n    var coords = [];\n    populateLine(coords, line);\n    pbf.writePackedSVarint(3, coords);\n}\n\nfunction writeMultiLine(lines, pbf, closed) {\n    var len = lines.length,\n        i;\n    if (len !== 1) {\n        var lengths = [];\n        for (i = 0; i < len; i++) lengths.push(lines[i].length - (closed ? 1 : 0));\n        pbf.writePackedVarint(2, lengths);\n        // TODO faster with custom writeMessage?\n    }\n    var coords = [];\n    for (i = 0; i < len; i++) populateLine(coords, lines[i], closed);\n    pbf.writePackedSVarint(3, coords);\n}\n\nfunction writeMultiPolygon(polygons, pbf) {\n    var len = polygons.length,\n        i, j;\n    if (len !== 1 || polygons[0].length !== 1) {\n        var lengths = [len];\n        for (i = 0; i < len; i++) {\n            lengths.push(polygons[i].length);\n            for (j = 0; j < polygons[i].length; j++) lengths.push(polygons[i][j].length - 1);\n        }\n        pbf.writePackedVarint(2, lengths);\n    }\n\n    var coords = [];\n    for (i = 0; i < len; i++) {\n        for (j = 0; j < polygons[i].length; j++) populateLine(coords, polygons[i][j], true);\n    }\n    pbf.writePackedSVarint(3, coords);\n}\n\nfunction populateLine(coords, line, closed) {\n    var i, j,\n        len = line.length - (closed ? 1 : 0),\n        sum = new Array(dim);\n    for (j = 0; j < dim; j++) sum[j] = 0;\n    for (i = 0; i < len; i++) {\n        for (j = 0; j < dim; j++) {\n            var n = Math.round(line[i][j] * e) - sum[j];\n            coords.push(n);\n            sum[j] += n;\n        }\n    }\n}\n\nfunction isSpecialKey(key, type) {\n    if (key === 'type') return true;\n    else if (type === 'FeatureCollection') {\n        if (key === 'features') return true;\n    } else if (type === 'Feature') {\n        if (key === 'id' || key === 'properties' || key === 'geometry') return true;\n    } else if (type === 'GeometryCollection') {\n        if (key === 'geometries') return true;\n    } else if (key === 'coordinates') return true;\n    return false;\n}\n","'use strict';\n\nexports.encode = require('./encode');\nexports.decode = require('./decode');\n"]} </t.length;i++)o(t[i]);return>