devsite/node_modules/handlebars/dist/amd/precompiler.js

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2024-07-08 01:49:38 +00:00
define(['exports', 'neo-async', 'fs', './handlebars', 'path', 'source-map'], function (exports, _neoAsync, _fs, _handlebars, _path, _sourceMap) {
/* eslint-env node */
/* eslint-disable no-console */
'use strict';
// istanbul ignore next
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
var _Async = _interopRequireDefault(_neoAsync);
var _fs2 = _interopRequireDefault(_fs);
module.exports.loadTemplates = function (opts, callback) {
loadStrings(opts, function (err, strings) {
if (err) {
callback(err);
} else {
loadFiles(opts, function (err, files) {
if (err) {
callback(err);
} else {
opts.templates = strings.concat(files);
callback(undefined, opts);
}
});
}
});
};
function loadStrings(opts, callback) {
var strings = arrayCast(opts.string),
names = arrayCast(opts.name);
if (names.length !== strings.length && strings.length > 1) {
return callback(new _handlebars.Exception('Number of names did not match the number of string inputs'));
}
_Async['default'].map(strings, function (string, callback) {
if (string !== '-') {
callback(undefined, string);
} else {
(function () {
// Load from stdin
var buffer = '';
process.stdin.setEncoding('utf8');
process.stdin.on('data', function (chunk) {
buffer += chunk;
});
process.stdin.on('end', function () {
callback(undefined, buffer);
});
})();
}
}, function (err, strings) {
strings = strings.map(function (string, index) {
return {
name: names[index],
path: names[index],
source: string
};
});
callback(err, strings);
});
}
function loadFiles(opts, callback) {
// Build file extension pattern
var extension = (opts.extension || 'handlebars').replace(/[\\^$*+?.():=!|{}\-[\]]/g, function (arg) {
return '\\' + arg;
});
extension = new RegExp('\\.' + extension + '$');
var ret = [],
queue = (opts.files || []).map(function (template) {
return { template: template, root: opts.root };
});
_Async['default'].whilst(function () {
return queue.length;
}, function (callback) {
var _queue$shift = queue.shift();
var path = _queue$shift.template;
var root = _queue$shift.root;
_fs2['default'].stat(path, function (err, stat) {
if (err) {
return callback(new _handlebars.Exception('Unable to open template file "' + path + '"'));
}
if (stat.isDirectory()) {
opts.hasDirectory = true;
_fs2['default'].readdir(path, function (err, children) {
/* istanbul ignore next : Race condition that being too lazy to test */
if (err) {
return callback(err);
}
children.forEach(function (file) {
var childPath = path + '/' + file;
if (extension.test(childPath) || _fs2['default'].statSync(childPath).isDirectory()) {
queue.push({ template: childPath, root: root || path });
}
});
callback();
});
} else {
_fs2['default'].readFile(path, 'utf8', function (err, data) {
/* istanbul ignore next : Race condition that being too lazy to test */
if (err) {
return callback(err);
}
if (opts.bom && data.indexOf('') === 0) {
data = data.substring(1);
}
// Clean the template name
var name = path;
if (!root) {
name = _path.basename(name);
} else if (name.indexOf(root) === 0) {
name = name.substring(root.length + 1);
}
name = name.replace(extension, '');
ret.push({
path: path,
name: name,
source: data
});
callback();
});
}
});
}, function (err) {
if (err) {
callback(err);
} else {
callback(undefined, ret);
}
});
}
module.exports.cli = function (opts) {
if (opts.version) {
console.log(_handlebars.VERSION);
return;
}
if (!opts.templates.length && !opts.hasDirectory) {
throw new _handlebars.Exception('Must define at least one template or directory.');
}
if (opts.simple && opts.min) {
throw new _handlebars.Exception('Unable to minimize simple output');
}
var multiple = opts.templates.length !== 1 || opts.hasDirectory;
if (opts.simple && multiple) {
throw new _handlebars.Exception('Unable to output multiple templates in simple mode');
}
// Force simple mode if we have only one template and it's unnamed.
if (!opts.amd && !opts.commonjs && opts.templates.length === 1 && !opts.templates[0].name) {
opts.simple = true;
}
// Convert the known list into a hash
var known = {};
if (opts.known && !Array.isArray(opts.known)) {
opts.known = [opts.known];
}
if (opts.known) {
for (var i = 0, len = opts.known.length; i < len; i++) {
known[opts.known[i]] = true;
}
}
var objectName = opts.partial ? 'Handlebars.partials' : 'templates';
var output = new _sourceMap.SourceNode();
if (!opts.simple) {
if (opts.amd) {
output.add("define(['" + opts.handlebarPath + 'handlebars.runtime\'], function(Handlebars) {\n Handlebars = Handlebars["default"];');
} else if (opts.commonjs) {
output.add('var Handlebars = require("' + opts.commonjs + '");');
} else {
output.add('(function() {\n');
}
output.add(' var template = Handlebars.template, templates = ');
if (opts.namespace) {
output.add(opts.namespace);
output.add(' = ');
output.add(opts.namespace);
output.add(' || ');
}
output.add('{};\n');
}
opts.templates.forEach(function (template) {
var options = {
knownHelpers: known,
knownHelpersOnly: opts.o
};
if (opts.map) {
options.srcName = template.path;
}
if (opts.data) {
options.data = true;
}
var precompiled = _handlebars.precompile(template.source, options);
// If we are generating a source map, we have to reconstruct the SourceNode object
if (opts.map) {
var consumer = new _sourceMap.SourceMapConsumer(precompiled.map);
precompiled = _sourceMap.SourceNode.fromStringWithSourceMap(precompiled.code, consumer);
}
if (opts.simple) {
output.add([precompiled, '\n']);
} else {
if (!template.name) {
throw new _handlebars.Exception('Name missing for template');
}
if (opts.amd && !multiple) {
output.add('return ');
}
output.add([objectName, "['", template.name, "'] = template(", precompiled, ');\n']);
}
});
// Output the content
if (!opts.simple) {
if (opts.amd) {
if (multiple) {
output.add(['return ', objectName, ';\n']);
}
output.add('});');
} else if (!opts.commonjs) {
output.add('})();');
}
}
if (opts.map) {
output.add('\n//# sourceMappingURL=' + opts.map + '\n');
}
output = output.toStringWithSourceMap();
output.map = output.map + '';
if (opts.min) {
output = minify(output, opts.map);
}
if (opts.map) {
_fs2['default'].writeFileSync(opts.map, output.map, 'utf8');
}
output = output.code;
if (opts.output) {
_fs2['default'].writeFileSync(opts.output, output, 'utf8');
} else {
console.log(output);
}
};
function arrayCast(value) {
value = value != null ? value : [];
if (!Array.isArray(value)) {
value = [value];
}
return value;
}
/**
* Run uglify to minify the compiled template, if uglify exists in the dependencies.
*
* We are using `require` instead of `import` here, because es6-modules do not allow
* dynamic imports and uglify-js is an optional dependency. Since we are inside NodeJS here, this
* should not be a problem.
*
* @param {string} output the compiled template
* @param {string} sourceMapFile the file to write the source map to.
*/
function minify(output, sourceMapFile) {
try {
// Try to resolve uglify-js in order to see if it does exist
require.resolve('uglify-js');
} catch (e) {
if (e.code !== 'MODULE_NOT_FOUND') {
// Something else seems to be wrong
throw e;
}
// it does not exist!
console.error('Code minimization is disabled due to missing uglify-js dependency');
return output;
}
return require('uglify-js').minify(output.code, {
sourceMap: {
content: output.map,
url: sourceMapFile
}
});
}
});
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