60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
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var fs = require('fs');
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var path = require('path');
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var commondir = require('commondir');
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/**
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* Add boot instructions to a browserify bundler.
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* @param {Object} instructions Boot instructions.
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* @param {Object} bundler A browserify object created by `browserify()`.
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*/
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module.exports = function addInstructionsToBrowserify(instructions, bundler) {
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bundleScripts(instructions.files, bundler);
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bundleInstructions(instructions, bundler);
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};
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function bundleScripts(files, bundler) {
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for (var key in files) {
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var list = files[key];
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if (!list.length) continue;
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var root = commondir(files[key].map(path.dirname));
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for (var ix in list) {
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var filepath = list[ix];
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// Build a short unique id that does not expose too much
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// information about the file system, but still preserves
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// useful information about where is the file coming from.
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var fileid = 'loopback-boot#' + key + '#' + path.relative(root, filepath);
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// Add the file to the bundle.
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bundler.require(filepath, { expose: fileid });
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// Rewrite the instructions entry with the new id that will be
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// used to load the file via `require(fileid)`.
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list[ix] = fileid;
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}
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}
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}
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function bundleInstructions(instructions, bundler) {
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var instructionsString = JSON.stringify(instructions, null, 2);
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/* The following code does not work due to a bug in browserify
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* https://github.com/substack/node-browserify/issues/771
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var instructionsStream = require('resumer')()
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.queue(instructionsString);
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instructionsStream.path = 'boot-instructions';
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b.require(instructionsStream, { expose: 'loopback-boot#instructions' });
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*/
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// Write the instructions to a file in our node_modules folder.
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// The location should not really matter as long as it is .gitignore-ed
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var instructionsFile = path.resolve(__dirname,
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'..', 'node_modules', 'instructions.json');
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fs.writeFileSync(instructionsFile, instructionsString, 'utf-8');
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bundler.require(instructionsFile, { expose: 'loopback-boot#instructions' });
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}
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