diff options
Diffstat (limited to 'node_modules/@babel/traverse/lib/scope/index.js')
| -rw-r--r-- | node_modules/@babel/traverse/lib/scope/index.js | 99 |
1 files changed, 79 insertions, 20 deletions
diff --git a/node_modules/@babel/traverse/lib/scope/index.js b/node_modules/@babel/traverse/lib/scope/index.js index ff56a2a5..f0c9748c 100644 --- a/node_modules/@babel/traverse/lib/scope/index.js +++ b/node_modules/@babel/traverse/lib/scope/index.js @@ -14,6 +14,7 @@ var _cache = require("../cache.js"); var _visitors = require("../visitors.js"); const { NOT_LOCAL_BINDING, + assignmentExpression, callExpression, cloneNode, getBindingIdentifiers, @@ -45,6 +46,7 @@ const { isThisExpression, isUnaryExpression, isVariableDeclaration, + expressionStatement, matchesPattern, memberExpression, numericLiteral, @@ -58,7 +60,8 @@ const { isMetaProperty, isPrivateName, isExportDeclaration, - buildUndefinedNode + buildUndefinedNode, + sequenceExpression } = _t; function gatherNodeParts(node, parts) { switch (node == null ? void 0 : node.type) { @@ -268,13 +271,13 @@ const collectorVisitor = { for (const param of params) { path.scope.registerBinding("param", param); } - if (path.isFunctionExpression() && path.has("id") && !path.get("id").node[NOT_LOCAL_BINDING]) { + if (path.isFunctionExpression() && path.node.id && !path.node.id[NOT_LOCAL_BINDING]) { path.scope.registerBinding("local", path.get("id"), path); } }, ClassExpression(path) { - if (path.has("id") && !path.get("id").node[NOT_LOCAL_BINDING]) { - path.scope.registerBinding("local", path); + if (path.node.id && !path.node.id[NOT_LOCAL_BINDING]) { + path.scope.registerBinding("local", path.get("id"), path); } }, TSTypeAnnotation(path) { @@ -314,10 +317,11 @@ class Scope { let parent, path = this.path; do { + var _path; const shouldSkip = path.key === "key" || path.listKey === "decorators"; path = path.parentPath; if (shouldSkip && path.isMethod()) path = path.parentPath; - if (path && path.isScope()) parent = path; + if ((_path = path) != null && _path.isScope()) parent = path; } while (path && !parent); return (_parent = parent) == null ? void 0 : _parent.scope; } @@ -341,7 +345,7 @@ class Scope { return identifier(this.generateUid(name)); } generateUid(name = "temp") { - name = toIdentifier(name).replace(/^_+/, "").replace(/[0-9]+$/g, ""); + name = toIdentifier(name).replace(/^_+/, "").replace(/\d+$/g, ""); let uid; let i = 1; do { @@ -514,7 +518,7 @@ class Scope { return buildUndefinedNode(); } registerConstantViolation(path) { - const ids = path.getBindingIdentifiers(); + const ids = path.getAssignmentIdentifiers(); for (const name of Object.keys(ids)) { var _this$getBinding; (_this$getBinding = this.getBinding(name)) == null || _this$getBinding.reassign(path); @@ -540,7 +544,7 @@ class Scope { this.checkBlockScopedCollisions(local, kind, name, id); } if (local) { - this.registerConstantViolation(bindingPath); + local.reassign(bindingPath); } else { this.bindings[name] = new _binding.default({ identifier: id, @@ -700,7 +704,7 @@ class Scope { path.traverse(collectorVisitor, state); this.crawling = false; for (const path of state.assignments) { - const ids = path.getBindingIdentifiers(); + const ids = path.getAssignmentIdentifiers(); for (const name of Object.keys(ids)) { if (path.scope.getBinding(name)) continue; programParent.addGlobal(ids[name]); @@ -856,18 +860,24 @@ class Scope { return !!this.getOwnBinding(name); } hasBinding(name, opts) { - var _opts, _opts2, _opts3; if (!name) return false; - if (this.hasOwnBinding(name)) return true; - { - if (typeof opts === "boolean") opts = { - noGlobals: opts - }; - } - if (this.parentHasBinding(name, opts)) return true; - if (!((_opts = opts) != null && _opts.noUids) && this.hasUid(name)) return true; - if (!((_opts2 = opts) != null && _opts2.noGlobals) && Scope.globals.includes(name)) return true; - if (!((_opts3 = opts) != null && _opts3.noGlobals) && Scope.contextVariables.includes(name)) return true; + let scope = this; + do { + if (scope.hasOwnBinding(name)) { + return true; + } + } while (scope = scope.parent); + let noGlobals; + let noUids; + if (typeof opts === "object") { + noGlobals = opts.noGlobals; + noUids = opts.noUids; + } else if (typeof opts === "boolean") { + noGlobals = opts; + } + if (!noUids && this.hasUid(name)) return true; + if (!noGlobals && Scope.globals.includes(name)) return true; + if (!noGlobals && Scope.contextVariables.includes(name)) return true; return false; } parentHasBinding(name, opts) { @@ -895,6 +905,55 @@ class Scope { } } while (scope = scope.parent); } + hoistVariables(emit = id => this.push({ + id + })) { + this.crawl(); + const seen = new Set(); + for (const name of Object.keys(this.bindings)) { + const binding = this.bindings[name]; + if (!binding) continue; + const { + path + } = binding; + if (!path.isVariableDeclarator()) continue; + const { + parent, + parentPath + } = path; + if (parent.kind !== "var" || seen.has(parent)) continue; + seen.add(path.parent); + let firstId; + const init = []; + for (const decl of parent.declarations) { + var _firstId; + (_firstId = firstId) != null ? _firstId : firstId = decl.id; + if (decl.init) { + init.push(assignmentExpression("=", decl.id, decl.init)); + } + const ids = Object.keys(getBindingIdentifiers(decl, false, true, true)); + for (const name of ids) { + emit(identifier(name), decl.init != null); + } + } + if (parentPath.parentPath.isFor({ + left: parent + })) { + parentPath.replaceWith(firstId); + } else if (init.length === 0) { + parentPath.remove(); + } else { + const expr = init.length === 1 ? init[0] : sequenceExpression(init); + if (parentPath.parentPath.isForStatement({ + init: parent + })) { + parentPath.replaceWith(expr); + } else { + parentPath.replaceWith(expressionStatement(expr)); + } + } + } + } } exports.default = Scope; Scope.globals = Object.keys(_globals.builtin); |