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301 lines
8.8 KiB
Plaintext
301 lines
8.8 KiB
Plaintext
import { O as getNextLocation, f as createRule, g as import_ast_utils, m as AST_NODE_TYPES } from "../utils.js";
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const OPTION_VALUE_SCHEME = [
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"always-multiline",
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"always",
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"never",
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"only-multiline"
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];
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var comma_dangle_default = createRule({
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name: "comma-dangle",
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meta: {
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type: "layout",
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docs: { description: "Require or disallow trailing commas" },
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fixable: "code",
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schema: {
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$defs: {
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value: {
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type: "string",
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enum: OPTION_VALUE_SCHEME
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},
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valueWithIgnore: {
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type: "string",
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enum: [...OPTION_VALUE_SCHEME, "ignore"]
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}
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},
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type: "array",
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items: [{ oneOf: [{ $ref: "#/$defs/value" }, {
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type: "object",
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properties: {
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arrays: { $ref: "#/$defs/valueWithIgnore" },
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objects: { $ref: "#/$defs/valueWithIgnore" },
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imports: { $ref: "#/$defs/valueWithIgnore" },
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exports: { $ref: "#/$defs/valueWithIgnore" },
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functions: { $ref: "#/$defs/valueWithIgnore" },
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importAttributes: { $ref: "#/$defs/valueWithIgnore" },
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dynamicImports: { $ref: "#/$defs/valueWithIgnore" },
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enums: { $ref: "#/$defs/valueWithIgnore" },
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generics: { $ref: "#/$defs/valueWithIgnore" },
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tuples: { $ref: "#/$defs/valueWithIgnore" }
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},
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additionalProperties: false
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}] }],
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additionalItems: false
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},
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defaultOptions: ["never"],
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messages: {
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unexpected: "Unexpected trailing comma.",
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missing: "Missing trailing comma."
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}
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},
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create(context, [options]) {
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function normalizeOptions(options = {}, ecmaVersion) {
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const DEFAULT_OPTION_VALUE = "never";
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if (typeof options === "string") return {
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arrays: options,
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objects: options,
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imports: options,
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exports: options,
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functions: !ecmaVersion || ecmaVersion === "latest" ? options : ecmaVersion < 2017 ? "ignore" : options,
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importAttributes: options,
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dynamicImports: !ecmaVersion || ecmaVersion === "latest" ? options : ecmaVersion < 2025 ? "ignore" : options,
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enums: options,
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generics: options,
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tuples: options
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};
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return {
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arrays: options.arrays ?? DEFAULT_OPTION_VALUE,
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objects: options.objects ?? DEFAULT_OPTION_VALUE,
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imports: options.imports ?? DEFAULT_OPTION_VALUE,
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exports: options.exports ?? DEFAULT_OPTION_VALUE,
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functions: options.functions ?? DEFAULT_OPTION_VALUE,
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importAttributes: options.importAttributes ?? DEFAULT_OPTION_VALUE,
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dynamicImports: options.dynamicImports ?? DEFAULT_OPTION_VALUE,
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enums: options.enums ?? DEFAULT_OPTION_VALUE,
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generics: options.generics ?? DEFAULT_OPTION_VALUE,
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tuples: options.tuples ?? DEFAULT_OPTION_VALUE
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};
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}
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const normalizedOptions = normalizeOptions(options, context.languageOptions?.ecmaVersion ?? context.parserOptions?.ecmaVersion);
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const isTSX = (context.languageOptions?.parserOptions?.ecmaFeatures?.jsx ?? context.parserOptions?.ecmaFeatures?.jsx) && context.filename?.endsWith(".tsx");
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const sourceCode = context.sourceCode;
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const closeBraces = [
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"}",
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"]",
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")",
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">"
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];
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const predicate = {
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"always": forceTrailingComma,
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"always-multiline": forceTrailingCommaIfMultiline,
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"only-multiline": allowTrailingCommaIfMultiline,
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"never": forbidTrailingComma,
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"ignore": () => {}
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};
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function last(nodes) {
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if (!nodes) return null;
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return nodes[nodes.length - 1] ?? null;
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}
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function getTrailingToken(info) {
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switch (info.node.type) {
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case "ObjectExpression":
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case "ArrayExpression":
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case "CallExpression":
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case "NewExpression":
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case "ImportExpression": return sourceCode.getLastToken(info.node, 1);
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default: {
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const lastItem = info.lastItem;
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if (!lastItem) return null;
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const nextToken = sourceCode.getTokenAfter(lastItem);
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if ((0, import_ast_utils.isCommaToken)(nextToken)) return nextToken;
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return sourceCode.getLastToken(lastItem);
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}
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}
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}
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function isMultiline(info) {
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if (!info.lastItem) return false;
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const penultimateToken = getTrailingToken(info);
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if (!penultimateToken) return false;
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const lastToken = sourceCode.getTokenAfter(penultimateToken);
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if (!lastToken) return false;
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return lastToken.loc.end.line !== penultimateToken.loc.end.line;
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}
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function isTrailingCommaAllowed(lastItem) {
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return lastItem.type !== "RestElement";
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}
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function forbidTrailingComma(info) {
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if (isTSX && info.node.type === AST_NODE_TYPES.TSTypeParameterDeclaration && info.node.params.length === 1) return;
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const lastItem = info.lastItem;
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if (!lastItem) return;
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const trailingToken = getTrailingToken(info);
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if (trailingToken && (0, import_ast_utils.isCommaToken)(trailingToken)) context.report({
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node: lastItem,
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loc: trailingToken.loc,
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messageId: "unexpected",
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*fix(fixer) {
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yield fixer.remove(trailingToken);
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yield fixer.insertTextBefore(sourceCode.getTokenBefore(trailingToken), "");
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yield fixer.insertTextAfter(sourceCode.getTokenAfter(trailingToken), "");
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}
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});
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}
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function forceTrailingComma(info) {
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const lastItem = info.lastItem;
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if (!lastItem) return;
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if (!isTrailingCommaAllowed(lastItem)) {
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forbidTrailingComma(info);
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return;
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}
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const trailingToken = getTrailingToken(info);
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if (!trailingToken || trailingToken.value === ",") return;
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const nextToken = sourceCode.getTokenAfter(trailingToken);
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if (!nextToken || !closeBraces.includes(nextToken.value)) return;
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context.report({
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node: lastItem,
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loc: {
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start: trailingToken.loc.end,
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end: getNextLocation(sourceCode, trailingToken.loc.end)
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},
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messageId: "missing",
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*fix(fixer) {
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yield fixer.insertTextAfter(trailingToken, ",");
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yield fixer.insertTextBefore(trailingToken, "");
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yield fixer.insertTextAfter(sourceCode.getTokenAfter(trailingToken), "");
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}
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});
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}
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function allowTrailingCommaIfMultiline(info) {
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if (!isMultiline(info)) forbidTrailingComma(info);
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}
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function forceTrailingCommaIfMultiline(info) {
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if (isMultiline(info)) forceTrailingComma(info);
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else forbidTrailingComma(info);
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}
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return {
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ObjectExpression: (node) => {
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predicate[normalizedOptions.objects]({
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node,
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lastItem: last(node.properties)
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});
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},
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ObjectPattern: (node) => {
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predicate[normalizedOptions.objects]({
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node,
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lastItem: last(node.properties)
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});
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},
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ArrayExpression: (node) => {
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predicate[normalizedOptions.arrays]({
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node,
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lastItem: last(node.elements)
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});
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},
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ArrayPattern: (node) => {
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predicate[normalizedOptions.arrays]({
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node,
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lastItem: last(node.elements)
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});
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},
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ImportDeclaration: (node) => {
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const lastSpecifier = last(node.specifiers);
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if (lastSpecifier?.type === "ImportSpecifier") predicate[normalizedOptions.imports]({
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node,
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lastItem: lastSpecifier
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});
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predicate[normalizedOptions.importAttributes]({
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node,
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lastItem: last(node.attributes)
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});
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},
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ExportNamedDeclaration: (node) => {
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predicate[normalizedOptions.exports]({
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node,
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lastItem: last(node.specifiers)
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});
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predicate[normalizedOptions.importAttributes]({
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node,
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lastItem: last(node.attributes)
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});
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},
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ExportAllDeclaration: (node) => {
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predicate[normalizedOptions.importAttributes]({
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node,
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lastItem: last(node.attributes)
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});
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},
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FunctionDeclaration: (node) => {
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predicate[normalizedOptions.functions]({
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node,
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lastItem: last(node.params)
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});
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},
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FunctionExpression: (node) => {
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predicate[normalizedOptions.functions]({
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node,
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lastItem: last(node.params)
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});
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},
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ArrowFunctionExpression: (node) => {
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predicate[normalizedOptions.functions]({
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node,
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lastItem: last(node.params)
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});
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},
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CallExpression: (node) => {
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predicate[normalizedOptions.functions]({
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node,
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lastItem: last(node.arguments)
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});
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},
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NewExpression: (node) => {
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predicate[normalizedOptions.functions]({
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node,
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lastItem: last(node.arguments)
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});
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},
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ImportExpression: (node) => {
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predicate[normalizedOptions.dynamicImports]({
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node,
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lastItem: node.options ?? node.source
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});
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},
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TSEnumDeclaration(node) {
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predicate[normalizedOptions.enums]({
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node,
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lastItem: last(node.body?.members ?? node.members)
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});
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},
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TSTypeParameterDeclaration(node) {
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predicate[normalizedOptions.generics]({
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node,
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lastItem: last(node.params)
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});
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},
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TSTypeParameterInstantiation(node) {
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predicate.never({
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node,
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lastItem: last(node.params)
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});
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},
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TSTupleType(node) {
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predicate[normalizedOptions.tuples]({
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node,
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lastItem: last(node.elementTypes)
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});
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},
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TSDeclareFunction(node) {
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predicate[normalizedOptions.functions]({
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node,
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lastItem: last(node.params)
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});
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},
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TSFunctionType(node) {
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predicate[normalizedOptions.functions]({
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node,
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lastItem: last(node.params)
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});
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}
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};
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}
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});
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export { comma_dangle_default as t };
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