80c4809aee
This fixes issues with ol.source.Vector being unable to use ol.ext.rbush, but it also means that potential future external modules without node module loader support will not work. If we ever depend on such a module, we can replace "var define;" with a minimal AMD define shim.
125 lines
3.2 KiB
JavaScript
125 lines
3.2 KiB
JavaScript
var fs = require('fs');
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var path = require('path');
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var async = require('async');
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var fse = require('fs-extra');
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var browserify = require('browserify');
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var pkg = require('../package.json');
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var root = path.join(__dirname, '..');
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var buildDir = path.join(root, 'build', 'ol.ext');
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/**
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* Get external module metadata.
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* @return {Array.<Object>} Array of objects representing external modules.
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*/
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function getExternalModules() {
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return pkg.ext.map(function(item) {
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if (typeof item === 'string') {
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return {
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name: item,
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module: item,
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main: require.resolve(item),
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browserify: false
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};
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} else {
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return {
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module: item.module,
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name: item.name !== undefined ? item.name : item.module,
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main: require.resolve(item.module),
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browserify: item.browserify !== undefined ? item.browserify : false
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};
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}
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});
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}
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/**
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* Wrap a CommonJS module in Closure Library accessible code.
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* @param {Object} mod Module metadata.
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* @param {function(Error, string)} callback Called with any error and the
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* wrapped module.
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*/
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function wrapModule(mod, callback) {
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var wrap = function(code) {
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return 'goog.provide(\'ol.ext.' + mod.name + '\');\n' +
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'/** @typedef {function(*)} */\n' +
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'ol.ext.' + mod.name + ';\n' +
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'(function() {\n' +
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'var exports = {};\n' +
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'var module = {exports: exports};\n' +
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'var define;\n' +
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'/**\n' +
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' * @fileoverview\n' +
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' * @suppress {accessControls, ambiguousFunctionDecl, ' +
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'checkDebuggerStatement, checkRegExp, checkTypes, checkVars, const, ' +
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'constantProperty, deprecated, duplicate, es5Strict, ' +
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'fileoverviewTags, missingProperties, nonStandardJsDocs, ' +
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'strictModuleDepCheck, suspiciousCode, undefinedNames, ' +
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'undefinedVars, unknownDefines, uselessCode, visibility}\n' +
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' */\n' + code + '\n' +
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'ol.ext.' + mod.name + ' = module.exports;\n' +
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'})();\n';
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};
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if (mod.browserify) {
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var b = browserify(mod.main, {standalone: mod.name}).
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bundle(function(err, buf) {
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if (err) {
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callback(err);
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return;
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}
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callback(null, wrap(buf.toString()));
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});
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} else {
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fs.readFile(mod.main, function(err, data) {
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if (err) {
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callback(err);
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return;
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}
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callback(null, wrap(data.toString()));
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});
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}
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}
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/**
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* Build external modules.
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* @param {Array.<Object>} modules External modules.
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* @param {function(Error)} callback Called with any error.
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*/
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function buildModules(modules, callback) {
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async.each(modules, function(mod, done) {
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var output = path.join(buildDir, mod.name) + '.js';
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async.waterfall([
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wrapModule.bind(null, mod),
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fse.outputFile.bind(fse, output)
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], done);
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}, callback);
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}
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/**
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* Build all external modules.
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* @param {function(Error)} callback Called with any error.
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*/
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function main(callback) {
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var modules = getExternalModules();
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buildModules(modules, callback);
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}
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if (require.main === module) {
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main(function(err) {
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if (err) {
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process.stderr.write(err.message + '\n');
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process.exit(1);
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} else {
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process.exit(0);
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}
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});
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}
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module.exports = main;
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