81 lines
2.6 KiB
JavaScript
Vendored
81 lines
2.6 KiB
JavaScript
Vendored
var acorn = require('acorn-node');
|
|
var walk = require('acorn-node/walk');
|
|
var defined = require('defined');
|
|
|
|
var requireRe = /\brequire\b/;
|
|
|
|
function parse (src, opts) {
|
|
if (!opts) opts = {};
|
|
var acornOpts = {
|
|
ranges: defined(opts.ranges, opts.range),
|
|
locations: defined(opts.locations, opts.loc),
|
|
allowReserved: defined(opts.allowReserved, true),
|
|
allowImportExportEverywhere: defined(opts.allowImportExportEverywhere, false)
|
|
};
|
|
|
|
// Use acorn-node's defaults for the rest.
|
|
if (opts.ecmaVersion != null) acornOpts.ecmaVersion = opts.ecmaVersion;
|
|
if (opts.sourceType != null) acornOpts.sourceType = opts.sourceType;
|
|
if (opts.allowHashBang != null) acornOpts.allowHashBang = opts.allowHashBang;
|
|
if (opts.allowReturnOutsideFunction != null) acornOpts.allowReturnOutsideFunction = opts.allowReturnOutsideFunction;
|
|
|
|
return acorn.parse(src, acornOpts);
|
|
}
|
|
|
|
var exports = module.exports = function (src, opts) {
|
|
return exports.find(src, opts).strings;
|
|
};
|
|
|
|
exports.find = function (src, opts) {
|
|
if (!opts) opts = {};
|
|
|
|
var word = opts.word === undefined ? 'require' : opts.word;
|
|
if (typeof src !== 'string') src = String(src);
|
|
|
|
var isRequire = opts.isRequire || function (node) {
|
|
return node.callee.type === 'Identifier'
|
|
&& node.callee.name === word
|
|
;
|
|
};
|
|
|
|
var modules = { strings : [], expressions : [] };
|
|
if (opts.nodes) modules.nodes = [];
|
|
|
|
var wordRe = word === 'require' ? requireRe : RegExp('\\b' + word + '\\b');
|
|
if (!wordRe.test(src)) return modules;
|
|
|
|
var ast = parse(src, opts.parse);
|
|
|
|
function visit(node, st, c) {
|
|
var hasRequire = wordRe.test(src.slice(node.start, node.end));
|
|
if (!hasRequire) return;
|
|
walk.base[node.type](node, st, c);
|
|
if (node.type !== 'CallExpression') return;
|
|
if (isRequire(node)) {
|
|
if (node.arguments.length) {
|
|
var arg = node.arguments[0];
|
|
if (arg.type === 'Literal') {
|
|
modules.strings.push(arg.value);
|
|
}
|
|
else if (arg.type === 'TemplateLiteral'
|
|
&& arg.quasis.length === 1
|
|
&& arg.expressions.length === 0) {
|
|
|
|
modules.strings.push(arg.quasis[0].value.raw);
|
|
}
|
|
else {
|
|
modules.expressions.push(src.slice(arg.start, arg.end));
|
|
}
|
|
}
|
|
if (opts.nodes) modules.nodes.push(node);
|
|
}
|
|
}
|
|
|
|
walk.recursive(ast, null, {
|
|
Statement: visit,
|
|
Expression: visit
|
|
});
|
|
|
|
return modules;
|
|
};
|