0.2.0 - Mid migration

web/node_modules/@webassemblyjs/helper-code-frame/lib/index.js

@@ -0,0 +1,47 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.codeFrameFromAst = codeFrameFromAst;
+exports.codeFrameFromSource = codeFrameFromSource;
+
+var _wastPrinter = require("@webassemblyjs/wast-printer");
+
+function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+var SHOW_LINES_AROUND_POINTER = 5;
+
+function repeat(char, nb) {
+  return Array(nb).fill(char).join("");
+} // TODO(sven): allow arbitrary ast nodes
+
+
+function codeFrameFromAst(ast, loc) {
+  return codeFrameFromSource((0, _wastPrinter.print)(ast), loc);
+}
+
+function codeFrameFromSource(source, loc) {
+  var start = loc.start,
+      end = loc.end;
+  var length = 1;
+
+  if (_typeof(end) === "object") {
+    length = end.column - start.column + 1;
+  }
+
+  return source.split("\n").reduce(function (acc, line, lineNbr) {
+    if (Math.abs(start.line - lineNbr) < SHOW_LINES_AROUND_POINTER) {
+      acc += line + "\n";
+    } // Add a new line with the pointer padded left
+
+
+    if (lineNbr === start.line - 1) {
+      acc += repeat(" ", start.column - 1);
+      acc += repeat("^", length);
+      acc += "\n";
+    }
+
+    return acc;
+  }, "");
+}