Sha256: fa20213fcfcf337012c1e393b993da01e92a7e292b54baf04e11bc5f4f3042f1
Contents?: true
Size: 1.7 KB
Versions: 8
Compression:
Stored size: 1.7 KB
Contents
"use strict";
exports.__esModule = true;
// istanbul ignore next
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }
var _types = require("../../../types");
var t = _interopRequireWildcard(_types);
var metadata = {
group: "builtin-pre"
};
exports.metadata = metadata;
var THIS_BREAK_KEYS = ["FunctionExpression", "FunctionDeclaration", "ClassProperty"];
function isUseStrict(node) {
if (!t.isLiteral(node)) return false;
if (node.raw && node.rawValue === node.value) {
return node.rawValue === "use strict";
} else {
return node.value === "use strict";
}
}
/**
* [Please add a description.]
*/
var visitor = {
/**
* [Please add a description.]
*/
Program: {
enter: function enter(program) {
var first = program.body[0];
var directive;
if (t.isExpressionStatement(first) && isUseStrict(first.expression)) {
directive = first;
} else {
directive = t.expressionStatement(t.literal("use strict"));
this.unshiftContainer("body", directive);
if (first) {
directive.leadingComments = first.leadingComments;
first.leadingComments = [];
}
}
directive._blockHoist = Infinity;
}
},
/**
* [Please add a description.]
*/
ThisExpression: function ThisExpression() {
if (!this.findParent(function (path) {
return !path.is("shadow") && THIS_BREAK_KEYS.indexOf(path.type) >= 0;
})) {
return t.identifier("undefined");
}
}
};
exports.visitor = visitor;
Version data entries
8 entries across 8 versions & 3 rubygems