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5.5 KiB
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1 line
5.5 KiB
Plaintext
{"version":3,"names":["_t","require","assignmentExpression","cloneNode","isIdentifier","isLiteral","isMemberExpression","isPrivateName","isPureish","isSuper","memberExpression","toComputedKey","getObjRef","node","nodes","scope","ref","hasBinding","name","object","Error","temp","generateUidIdentifierBasedOnNode","push","id","getPropRef","prop","property","key","explode","obj","uid","computed"],"sources":["../src/explode-assignable-expression.ts"],"sourcesContent":["import type { Scope } from \"@babel/traverse\";\nimport {\n assignmentExpression,\n cloneNode,\n isIdentifier,\n isLiteral,\n isMemberExpression,\n isPrivateName,\n isPureish,\n isSuper,\n memberExpression,\n toComputedKey,\n} from \"@babel/types\";\nimport type * as t from \"@babel/types\";\n\nfunction getObjRef(\n node: t.Identifier | t.MemberExpression,\n nodes: Array<t.AssignmentExpression>,\n scope: Scope,\n): t.Identifier | t.Super {\n let ref;\n if (isIdentifier(node)) {\n if (scope.hasBinding(node.name)) {\n // this variable is declared in scope so we can be 100% sure\n // that evaluating it multiple times won't trigger a getter\n // or something else\n return node;\n } else {\n // could possibly trigger a getter so we need to only evaluate\n // it once\n ref = node;\n }\n } else if (isMemberExpression(node)) {\n ref = node.object;\n\n if (isSuper(ref) || (isIdentifier(ref) && scope.hasBinding(ref.name))) {\n // the object reference that we need to save is locally declared\n // so as per the previous comment we can be 100% sure evaluating\n // it multiple times will be safe\n // Super cannot be directly assigned so lets return it also\n return ref;\n }\n } else {\n throw new Error(`We can't explode this node type ${node[\"type\"]}`);\n }\n\n const temp = scope.generateUidIdentifierBasedOnNode(ref);\n scope.push({ id: temp });\n nodes.push(assignmentExpression(\"=\", cloneNode(temp), cloneNode(ref)));\n return temp;\n}\n\nfunction getPropRef(\n node: t.MemberExpression,\n nodes: Array<t.AssignmentExpression>,\n scope: Scope,\n): t.Identifier | t.Literal {\n const prop = node.property;\n if (isPrivateName(prop)) {\n throw new Error(\n \"We can't generate property ref for private name, please install `@babel/plugin-transform-class-properties`\",\n );\n }\n const key = toComputedKey(node, prop);\n if (isLiteral(key) && isPureish(key)) return key;\n\n const temp = scope.generateUidIdentifierBasedOnNode(prop);\n scope.push({ id: temp });\n nodes.push(assignmentExpression(\"=\", cloneNode(temp), cloneNode(prop)));\n return temp;\n}\n\nexport default function explode(\n node: t.Identifier | t.MemberExpression,\n nodes: Array<t.AssignmentExpression>,\n scope: Scope,\n): {\n uid: t.Identifier | t.MemberExpression | t.Super;\n ref: t.Identifier | t.MemberExpression;\n} {\n const obj = getObjRef(node, nodes, scope);\n\n let ref, uid;\n\n if (isIdentifier(node)) {\n ref = cloneNode(node);\n uid = obj;\n } else {\n const prop = getPropRef(node, nodes, scope);\n const computed = node.computed || isLiteral(prop);\n uid = memberExpression(cloneNode(obj), cloneNode(prop), computed);\n ref = memberExpression(cloneNode(obj), cloneNode(prop), computed);\n }\n\n return {\n uid: uid,\n ref: ref,\n 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