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babel-import-util

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Comparing version 2.1.0 to 2.1.1

33

package.json
{
"name": "babel-import-util",
"version": "2.1.0",
"version": "2.1.1",
"description": "Utility for manipulating imports within babel plugins",

@@ -8,2 +8,16 @@ "repository": "https://github.com/ef4/babel-import-util",

"author": "Edward Faulkner <edward@eaf4.com>",
"scripts": {
"prepare": "tsc",
"build": "tsc",
"pretest": "tsc",
"lint": "tsc && eslint --cache --ext .ts .",
"test": "jest",
"clean": "git clean -d -f -x src __tests__"
},
"jest": {
"testPathIgnorePatterns": [
"test-support.js",
".*\\.ts"
]
},
"main": "src/index.js",

@@ -15,8 +29,2 @@ "files": [

],
"jest": {
"testPathIgnorePatterns": [
"test-support.js",
".*\\.ts"
]
},
"devDependencies": {

@@ -28,3 +36,2 @@ "@babel/core": "^7.14.3",

"@babel/preset-env": "^7.14.7",
"@types/babel__core": "^7.20.5",
"@types/babel__traverse": "^7.11.1",

@@ -41,3 +48,2 @@ "@types/jest": "^29.5.3",

"prettier": "^2.2.1",
"release-plan": "^0.9.0",
"typescript": "^4.3.2"

@@ -47,10 +53,3 @@ },

"node": ">= 12.*"
},
"scripts": {
"build": "tsc",
"clean": "git clean -d -f -x src __tests__",
"lint": "tsc && eslint --cache --ext .ts .",
"pretest": "tsc",
"test": "jest"
}
}
}

@@ -39,5 +39,3 @@ # babel-import-util

if (callee.isIdentifier() && callee.node.name === 'myTarget') {
state.importUtil.replaceWith(callee, (i) =>
i.import(callee, 'my-implementation', 'theMethod')
);
callee.replaceWith(state.importUtil.import(callee, 'my-implementation', 'theMethod'));
}

@@ -57,29 +55,18 @@ },

class ImportUtil {
/*
Replace `target` with the new node produced by your callback. Your
callback can use `i.import` to gain access to imported identifiers.
// Import the given value (if needed) and return an Identifier representing
// it.
import(
// the spot at which you will insert the Identifier we return to you
target: NodePath<t.Node>,
Example:
// the path to the module you're importing from
moduleSpecifier: string,
util.replaceWith(path, (i) =>
t.callExpression(i.import('my-library', 'someFunction'), [])
);
*/
replaceWith<T extends t.Node, R extends t.Node>(
target: NodePath<T>,
fn: (i: Importer) => R
): NodePath<R>;
// the name you're importing from that module. Use "default" for the default
// export. Use "*" for the namespace.
exportedName: string,
/*
Similar to `replaceWith` above, except instead of replacing the target
we will insert the new Node before or after it.
*/
insertAfter<T extends t.Node, R extends t.Node>(
target: NodePath<T>,
fn: (i: Importer) => R
): NodePath<R>;
insertBefore<T extends t.Node, R extends t.Node>(
target: NodePath<T>,
fn: (i: Importer) => R
): NodePath<R>;
// Optional hint for helping us pick a name for the imported binding
nameHint?: string
): t.Identifier;

@@ -102,24 +89,3 @@ // If needed, adds a bare import like:

removeAllImports(moduleSpecifier: string): void;
// Import the given value (if needed) and return an Identifier representing
// it.
// CAUTION: this is a lower-level API that leaves some of the reference
// safety up to you. It's better to use replaceWith, insertAfter, insertBefore,
// or mutate. But this can still be helpful in contexts where you're already
// planning to manage babel's scopes anyawy.
import(
// the spot at which you will insert the Identifier we return to you
target: NodePath<t.Node>,
// the path to the module you're importing from
moduleSpecifier: string,
// the name you're importing from that module. Use "default" for the default
// export. Use "*" for the namespace.
exportedName: string,
// Optional hint for helping us pick a name for the imported binding
nameHint?: string
): t.Identifier;
}
```

@@ -1,17 +0,12 @@

import type * as Babel from '@babel/core';
import type { types as t, NodePath } from '@babel/core';
import type { NodePath } from '@babel/traverse';
import type * as t from '@babel/types';
type BabelTypes = typeof t;
export declare class ImportUtil {
private babel;
private t;
private program;
private t;
constructor(babel: typeof Babel, program: NodePath<t.Program>);
constructor(t: BabelTypes, program: NodePath<t.Program>);
removeImport(moduleSpecifier: string, exportedName: string): void;
removeAllImports(moduleSpecifier: string): void;
import(target: NodePath<t.Node>, moduleSpecifier: string, exportedName: string, nameHint?: string): t.Identifier;
private unreferencedImport;
importForSideEffect(moduleSpecifier: string): void;
replaceWith<T extends t.Node, R extends t.Node>(target: NodePath<T>, fn: (i: Importer) => R): NodePath<R>;
insertAfter<T extends t.Node, R extends t.Node>(target: NodePath<T>, fn: (i: Importer) => R): NodePath<R>;
insertBefore<T extends t.Node, R extends t.Node>(target: NodePath<T>, fn: (i: Importer) => R): NodePath<R>;
mutate<Replacement extends t.Node>(fn: (importer: Importer) => NodePath<Replacement>, defaultNameHint?: string): NodePath<Replacement>;
private addSpecifier;

@@ -22,4 +17,2 @@ private buildSpecifier;

}
export interface Importer {
import(moduleSpecifier: string, exportedName: string, nameHint?: string): t.Identifier;
}
export {};

@@ -5,6 +5,5 @@ "use strict";

class ImportUtil {
constructor(babel, program) {
this.babel = babel;
constructor(t, program) {
this.t = t;
this.program = program;
this.t = babel.types;
}

@@ -41,8 +40,2 @@ // remove one imported binding. If this is the last thing imported from the

// it.
//
// This method is trickier to use safely than our higher-level methods
// (`insertAfter`, `insertBefore`, `replaceWith`, `mutate`) because after you
// insert the identifier into the AST, it's up to you to ensure that babel's
// scope system is aware of the new reference. The other methods do that for
// you automatically.
import(

@@ -58,17 +51,2 @@ // the spot at which you will insert the Identifier we return to you

nameHint) {
return this.unreferencedImport(target, moduleSpecifier, exportedName, desiredName(nameHint, exportedName, defaultNameHint(target)));
}
// Import the given value (if needed) and return an Identifier representing
// it.
unreferencedImport(
// the spot at which you will insert the Identifier we return to you
target,
// the path to the module you're importing from
moduleSpecifier,
// the name you're importing from that module. Use "default" for the default
// export. Use "*" for the namespace.
exportedName,
// the preferred name you want, if we neeed to create a new binding. You
// might get something similar instead, to avoid collisions.
preferredName) {
var _a;

@@ -97,3 +75,3 @@ let isNamespaceImport = exportedName === '*';

else {
return this.addSpecifier(target, declaration, exportedName, preferredName);
return this.addSpecifier(target, declaration, exportedName, nameHint);
}

@@ -103,3 +81,3 @@ }

let declaration = this.insertAfterExistingImports(this.t.importDeclaration([], this.t.stringLiteral(moduleSpecifier)));
return this.addSpecifier(target, declaration, exportedName, preferredName);
return this.addSpecifier(target, declaration, exportedName, nameHint);
}

@@ -113,69 +91,12 @@ }

}
replaceWith(target, fn) {
return this.mutate((i) => {
target.replaceWith(fn(i));
// the return value of replaceWith is not a reliable way to get the
// updated path, at least in the case where the user replaced an
// expression with a statement. Instead we will rely on the fact that path
// replacement also mutates its argument, so `target` now points at the
// newly replaced path.
return target;
}, defaultNameHint(target));
}
insertAfter(target, fn) {
return this.mutate((i) => target.insertAfter(fn(i))[0], defaultNameHint(target));
}
insertBefore(target, fn) {
return this.mutate((i) => target.insertBefore(fn(i))[0], defaultNameHint(target));
}
// Low-level method for when you don't want to use our higher-level methods
// (replaceWith, insertBefore, insertAfter)
mutate(fn, defaultNameHint) {
let symbols = new Map();
const importer = {
import: (moduleSpecifier, exportedName, nameHint) => {
let identifier = this.t.identifier('__babel_import_util_placeholder__');
symbols.set(identifier, { moduleSpecifier, exportedName, nameHint });
return identifier;
},
};
const updateReference = (path) => {
if (!path.isIdentifier()) {
return;
}
let hit = symbols.get(path.node);
if (hit) {
let newIdentifier = this.unreferencedImport(path, hit.moduleSpecifier, hit.exportedName, desiredName(hit.nameHint, hit.exportedName, defaultNameHint));
path.replaceWith(newIdentifier);
let binding = path.scope.getBinding(newIdentifier.name);
if (!binding) {
// we create the binding at the point where we add the import, so this
// would indicate broken behavior
throw new Error(`bug: this is supposed to never happen`);
}
binding.reference(path);
}
};
let result = fn(importer);
updateReference(result);
this.babel.traverse(result.node, {
ReferencedIdentifier: (path) => {
updateReference(path);
},
}, result.scope, {}, result);
return result;
}
addSpecifier(target, declaration, exportedName, preferredName) {
let local = this.t.identifier(unusedNameLike(target, preferredName));
addSpecifier(target, declaration, exportedName, nameHint) {
let local = this.t.identifier(unusedNameLike(target, desiredName(nameHint, exportedName, target)));
let specifier = this.buildSpecifier(exportedName, local);
let added;
if (specifier.type === 'ImportDefaultSpecifier') {
declaration.node.specifiers.unshift(specifier);
added = declaration.get(`specifiers.0`);
}
else {
declaration.node.specifiers.push(specifier);
added = declaration.get(`specifiers.${declaration.node.specifiers.length - 1}`);
}
declaration.scope.registerBinding('module', added);
declaration.scope.registerBinding('module', declaration.get(`specifiers.${declaration.node.specifiers.length - 1}`));
return local;

@@ -241,3 +162,3 @@ }

}
function desiredName(nameHint, exportedName, defaultNameHint) {
function desiredName(nameHint, exportedName, target) {
if (nameHint) {

@@ -253,3 +174,8 @@ // first we opportunistically do camelization when an illegal character is

if (exportedName === 'default' || exportedName === '*') {
return defaultNameHint !== null && defaultNameHint !== void 0 ? defaultNameHint : 'a';
if (target.isIdentifier()) {
return target.node.name;
}
else {
return target.scope.generateUidIdentifierBasedOnNode(target.node).name;
}
}

@@ -260,13 +186,2 @@ else {

}
function defaultNameHint(target) {
if (target === null || target === void 0 ? void 0 : target.isIdentifier()) {
return target.node.name;
}
else if (target) {
return target.scope.generateUidIdentifierBasedOnNode(target.node).name;
}
else {
return undefined;
}
}
function matchSpecifier(spec, exportedName) {

@@ -285,2 +200,2 @@ switch (exportedName) {

}
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type * as Babel from '@babel/core';\nimport type { types as t, NodePath } from '@babel/core';\n\nexport class ImportUtil {\n  private t: typeof Babel.types;\n\n  constructor(private babel: typeof Babel, private program: NodePath<t.Program>) {\n    this.t = babel.types;\n  }\n\n  // remove one imported binding. If this is the last thing imported from the\n  // given moduleSpecifier, the whole statement will also be removed.\n  removeImport(moduleSpecifier: string, exportedName: string): void {\n    for (let topLevelPath of this.program.get('body')) {\n      if (!matchModule(topLevelPath, moduleSpecifier)) {\n        continue;\n      }\n\n      let importSpecifierPath = topLevelPath\n        .get('specifiers')\n        .find((specifierPath) => matchSpecifier(specifierPath, exportedName));\n      if (importSpecifierPath) {\n        if (topLevelPath.node.specifiers.length === 1) {\n          topLevelPath.remove();\n        } else {\n          importSpecifierPath.remove();\n        }\n      }\n    }\n  }\n\n  // remove all imports from the given moduleSpecifier\n  removeAllImports(moduleSpecifier: string): void {\n    for (let topLevelPath of this.program.get('body')) {\n      if (matchModule(topLevelPath, moduleSpecifier)) {\n        topLevelPath.remove();\n      }\n    }\n  }\n\n  // Import the given value (if needed) and return an Identifier representing\n  // it.\n  //\n  // This method is trickier to use safely than our higher-level methods\n  // (`insertAfter`, `insertBefore`, `replaceWith`, `mutate`) because after you\n  // insert the identifier into the AST, it's up to you to ensure that babel's\n  // scope system is aware of the new reference. The other methods do that for\n  // you automatically.\n  import(\n    // the spot at which you will insert the Identifier we return to you\n    target: NodePath<t.Node>,\n\n    // the path to the module you're importing from\n    moduleSpecifier: string,\n\n    // the name you're importing from that module. Use \"default\" for the default\n    // export. Use \"*\" for the namespace.\n    exportedName: string,\n\n    // Optional hint for helping us pick a name for the imported binding\n    nameHint?: string\n  ): t.Identifier {\n    return this.unreferencedImport(\n      target,\n      moduleSpecifier,\n      exportedName,\n      desiredName(nameHint, exportedName, defaultNameHint(target))\n    );\n  }\n\n  // Import the given value (if needed) and return an Identifier representing\n  // it.\n  private unreferencedImport(\n    // the spot at which you will insert the Identifier we return to you\n    target: NodePath<t.Node>,\n\n    // the path to the module you're importing from\n    moduleSpecifier: string,\n\n    // the name you're importing from that module. Use \"default\" for the default\n    // export. Use \"*\" for the namespace.\n    exportedName: string,\n\n    // the preferred name you want, if we neeed to create a new binding. You\n    // might get something similar instead, to avoid collisions.\n    preferredName: string\n  ): t.Identifier {\n    let isNamespaceImport = exportedName === '*';\n    let isDefaultImport = exportedName === 'default';\n    let isNamedImport = !isDefaultImport && !isNamespaceImport;\n    let declaration = this.findImportFrom(moduleSpecifier);\n    let hasNamespaceSpecifier = declaration?.node.specifiers.find(\n      (s) => s.type === 'ImportNamespaceSpecifier'\n    );\n    let hasNamedSpecifiers = declaration?.node.specifiers.find((s) => s.type === 'ImportSpecifier');\n\n    /**\n     * the file has a preexisting non-namespace import and a transform tries to add a namespace import, so they don't get combined\n     * the file has a preexisting namespace import and a transform tries to add a non-namespace import, so they don't get combined\n     * the file has a preexisting namespace import and a transform tries to add a namespace import, so they don't get combined\n     */\n    let cannotUseExistingDeclaration =\n      (hasNamedSpecifiers && isNamespaceImport) ||\n      (hasNamespaceSpecifier && isNamedImport) ||\n      (hasNamespaceSpecifier && isNamespaceImport);\n\n    if (!cannotUseExistingDeclaration && declaration) {\n      let specifier = declaration\n        .get('specifiers')\n        .find((spec) => matchSpecifier(spec, exportedName));\n      if (specifier && target.scope.getBinding(specifier.node.local.name)?.kind === 'module') {\n        return this.t.identifier(specifier.node.local.name);\n      } else {\n        return this.addSpecifier(target, declaration, exportedName, preferredName);\n      }\n    } else {\n      let declaration = this.insertAfterExistingImports(\n        this.t.importDeclaration([], this.t.stringLiteral(moduleSpecifier))\n      );\n      return this.addSpecifier(target, declaration, exportedName, preferredName);\n    }\n  }\n\n  importForSideEffect(moduleSpecifier: string): void {\n    let declaration = this.findImportFrom(moduleSpecifier);\n    if (!declaration) {\n      this.insertAfterExistingImports(\n        this.t.importDeclaration([], this.t.stringLiteral(moduleSpecifier))\n      );\n    }\n  }\n\n  replaceWith<T extends t.Node, R extends t.Node>(\n    target: NodePath<T>,\n    fn: (i: Importer) => R\n  ): NodePath<R> {\n    return this.mutate((i) => {\n      target.replaceWith(fn(i));\n      // the return value of replaceWith is not a reliable way to get the\n      // updated path, at least in the case where the user replaced an\n      // expression with a statement. Instead we will rely on the fact that path\n      // replacement also mutates its argument, so `target` now points at the\n      // newly replaced path.\n      return target as unknown as NodePath<R>;\n    }, defaultNameHint(target));\n  }\n\n  insertAfter<T extends t.Node, R extends t.Node>(\n    target: NodePath<T>,\n    fn: (i: Importer) => R\n  ): NodePath<R> {\n    return this.mutate((i) => target.insertAfter(fn(i))[0] as NodePath<R>, defaultNameHint(target));\n  }\n\n  insertBefore<T extends t.Node, R extends t.Node>(\n    target: NodePath<T>,\n    fn: (i: Importer) => R\n  ): NodePath<R> {\n    return this.mutate(\n      (i) => target.insertBefore(fn(i))[0] as NodePath<R>,\n      defaultNameHint(target)\n    );\n  }\n\n  // Low-level method for when you don't want to use our higher-level methods\n  // (replaceWith, insertBefore, insertAfter)\n  mutate<Replacement extends t.Node>(\n    fn: (importer: Importer) => NodePath<Replacement>,\n    defaultNameHint?: string\n  ): NodePath<Replacement> {\n    let symbols: Map<\n      t.Identifier,\n      { moduleSpecifier: string; 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If this is the last thing imported from the\n  // given moduleSpecifier, the whole statement will also be removed.\n  removeImport(moduleSpecifier: string, exportedName: string): void {\n    for (let topLevelPath of this.program.get('body')) {\n      if (!matchModule(topLevelPath, moduleSpecifier)) {\n        continue;\n      }\n\n      let importSpecifierPath = topLevelPath\n        .get('specifiers')\n        .find((specifierPath) => matchSpecifier(specifierPath, exportedName));\n      if (importSpecifierPath) {\n        if (topLevelPath.node.specifiers.length === 1) {\n          topLevelPath.remove();\n        } else {\n          importSpecifierPath.remove();\n        }\n      }\n    }\n  }\n\n  // remove all imports from the given moduleSpecifier\n  removeAllImports(moduleSpecifier: string): void {\n    for (let topLevelPath of this.program.get('body')) {\n      if (matchModule(topLevelPath, moduleSpecifier)) {\n        topLevelPath.remove();\n      }\n    }\n  }\n\n  // Import the given value (if needed) and return an Identifier representing\n  // it.\n  import(\n    // the spot at which you will insert the Identifier we return to you\n    target: NodePath<t.Node>,\n\n    // the path to the module you're importing from\n    moduleSpecifier: string,\n\n    // the name you're importing from that module. Use \"default\" for the default\n    // export. Use \"*\" for the namespace.\n    exportedName: string,\n\n    // Optional hint for helping us pick a name for the imported binding\n    nameHint?: string\n  ): t.Identifier {\n    let isNamespaceImport = exportedName === '*';\n    let isDefaultImport = exportedName === 'default';\n    let isNamedImport = !isDefaultImport && !isNamespaceImport;\n    let declaration = this.findImportFrom(moduleSpecifier);\n    let hasNamespaceSpecifier = declaration?.node.specifiers.find(\n      (s) => s.type === 'ImportNamespaceSpecifier'\n    );\n    let hasNamedSpecifiers = declaration?.node.specifiers.find((s) => s.type === 'ImportSpecifier');\n\n    /**\n     * the file has a preexisting non-namespace import and a transform tries to add a namespace import, so they don't get combined\n     * the file has a preexisting namespace import and a transform tries to add a non-namespace import, so they don't get combined\n     * the file has a preexisting namespace import and a transform tries to add a namespace import, so they don't get combined\n     */\n    let cannotUseExistingDeclaration =\n      (hasNamedSpecifiers && isNamespaceImport) ||\n      (hasNamespaceSpecifier && isNamedImport) ||\n      (hasNamespaceSpecifier && isNamespaceImport);\n\n    if (!cannotUseExistingDeclaration && declaration) {\n      let specifier = declaration\n        .get('specifiers')\n        .find((spec) => matchSpecifier(spec, exportedName));\n      if (specifier && target.scope.getBinding(specifier.node.local.name)?.kind === 'module') {\n        return this.t.identifier(specifier.node.local.name);\n      } else {\n        return this.addSpecifier(target, declaration, exportedName, nameHint);\n      }\n    } else {\n      let declaration = this.insertAfterExistingImports(\n        this.t.importDeclaration([], this.t.stringLiteral(moduleSpecifier))\n      );\n      return this.addSpecifier(target, declaration, exportedName, nameHint);\n    }\n  }\n\n  importForSideEffect(moduleSpecifier: string): void {\n    let declaration = this.findImportFrom(moduleSpecifier);\n    if (!declaration) {\n      this.insertAfterExistingImports(\n        this.t.importDeclaration([], this.t.stringLiteral(moduleSpecifier))\n      );\n    }\n  }\n\n  private addSpecifier(\n    target: NodePath<t.Node>,\n    declaration: NodePath<t.ImportDeclaration>,\n    exportedName: string,\n    nameHint: string | undefined\n  ): t.Identifier {\n    let local = this.t.identifier(\n      unusedNameLike(target, desiredName(nameHint, exportedName, target))\n    );\n    let specifier = this.buildSpecifier(exportedName, local);\n    if (specifier.type === 'ImportDefaultSpecifier') {\n      declaration.node.specifiers.unshift(specifier);\n    } else {\n      declaration.node.specifiers.push(specifier);\n    }\n    declaration.scope.registerBinding(\n      'module',\n      declaration.get(`specifiers.${declaration.node.specifiers.length - 1}`) as NodePath\n    );\n    return local;\n  }\n\n  private buildSpecifier(exportedName: string, localName: t.Identifier) {\n    switch (exportedName) {\n      case 'default':\n        return this.t.importDefaultSpecifier(localName);\n      case '*':\n        return this.t.importNamespaceSpecifier(localName);\n      default:\n        return this.t.importSpecifier(localName, this.t.identifier(exportedName));\n    }\n  }\n\n  private findImportFrom(moduleSpecifier: string): NodePath<t.ImportDeclaration> | undefined {\n    for (let path of this.program.get('body')) {\n      if (\n        path.isImportDeclaration() &&\n        path.node.source.value === moduleSpecifier &&\n        path.node.importKind !== 'type'\n      ) {\n        return path;\n      }\n    }\n    return undefined;\n  }\n\n  private insertAfterExistingImports<S extends t.Statement>(statement: S): NodePath<S> {\n    let lastIndex: number | undefined;\n    for (let [index, node] of this.program.node.body.entries()) {\n      if (node.type === 'ImportDeclaration') {\n        lastIndex = index;\n      }\n    }\n    if (lastIndex == null) {\n      // we are intentionally not using babel's container-aware methods, because\n      // while in theory it's nice that they schedule other plugins to run on\n      // our nodes, in practice those nodes might get mutated or removed by some\n      // other plugin in the intervening time causing failures.\n      this.program.node.body.unshift(statement);\n      return this.program.get('body.0') as NodePath<S>;\n    } else {\n      this.program.node.body.splice(lastIndex + 1, 0, statement);\n      return this.program.get(`body.${lastIndex + 1}`) as NodePath<S>;\n    }\n  }\n}\n\nfunction unusedNameLike(path: NodePath<t.Node>, name: string): string {\n  let candidate = name;\n  let counter = 0;\n  while (path.scope.hasBinding(candidate)) {\n    candidate = `${name}${counter++}`;\n  }\n  return candidate;\n}\n\nfunction name(node: t.StringLiteral | t.Identifier): string {\n  if (node.type === 'StringLiteral') {\n    return node.value;\n  } else {\n    return node.name;\n  }\n}\n\nfunction desiredName(nameHint: string | undefined, exportedName: string, target: NodePath<t.Node>) {\n  if (nameHint) {\n    // first we opportunistically do camelization when an illegal character is\n    // followed by a lowercase letter, in an effort to aid readability of the\n    // output.\n    let cleaned = nameHint.replace(/[^a-zA-Z_]([a-z])/g, (_m, letter) => letter.toUpperCase());\n    // then we unliterally strip all remaining illegal characters.\n    cleaned = cleaned.replace(/[^a-zA-Z_]/g, '');\n    return cleaned;\n  }\n  if (exportedName === 'default' || exportedName === '*') {\n    if (target.isIdentifier()) {\n      return target.node.name;\n    } else {\n      return target.scope.generateUidIdentifierBasedOnNode(target.node).name;\n    }\n  } else {\n    return exportedName;\n  }\n}\n\nfunction matchSpecifier(spec: NodePath<any>, exportedName: string): boolean {\n  switch (exportedName) {\n    case 'default':\n      return spec.isImportDefaultSpecifier();\n    case '*':\n      return spec.isImportNamespaceSpecifier();\n    default:\n      return spec.isImportSpecifier() && name(spec.node.imported) === exportedName;\n  }\n}\n\nfunction matchModule(\n  path: NodePath<any>,\n  moduleSpecifier: string\n): path is NodePath<t.ImportDeclaration> {\n  return path.isImportDeclaration() && path.get('source').node.value === moduleSpecifier;\n}\n"]}
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