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Similar blocks of code found in 8 locations. Consider refactoring.
Open

export function isForXStatement(node: ?Object, opts?: Object): boolean {
  if (!node) return false;

  const nodeType = node.type;
  if (
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 7 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 3524..3541
packages/babel-types/src/validators/generated/index.js on lines 3739..3756
packages/babel-types/src/validators/generated/index.js on lines 3778..3795
packages/babel-types/src/validators/generated/index.js on lines 4130..4147
packages/babel-types/src/validators/generated/index.js on lines 4167..4184
packages/babel-types/src/validators/generated/index.js on lines 4205..4222
packages/babel-types/src/validators/generated/index.js on lines 4449..4466

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 8 locations. Consider refactoring.
Open

export function isUnaryLike(node: ?Object, opts?: Object): boolean {
  if (!node) return false;

  const nodeType = node.type;
  if (
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 7 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 3524..3541
packages/babel-types/src/validators/generated/index.js on lines 3739..3756
packages/babel-types/src/validators/generated/index.js on lines 3778..3795
packages/babel-types/src/validators/generated/index.js on lines 3834..3851
packages/babel-types/src/validators/generated/index.js on lines 4130..4147
packages/babel-types/src/validators/generated/index.js on lines 4205..4222
packages/babel-types/src/validators/generated/index.js on lines 4449..4466

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 8 locations. Consider refactoring.
Open

export function isClass(node: ?Object, opts?: Object): boolean {
  if (!node) return false;

  const nodeType = node.type;
  if (
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 7 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 3524..3541
packages/babel-types/src/validators/generated/index.js on lines 3739..3756
packages/babel-types/src/validators/generated/index.js on lines 3778..3795
packages/babel-types/src/validators/generated/index.js on lines 3834..3851
packages/babel-types/src/validators/generated/index.js on lines 4130..4147
packages/babel-types/src/validators/generated/index.js on lines 4167..4184
packages/babel-types/src/validators/generated/index.js on lines 4449..4466

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 8 locations. Consider refactoring.
Open

export function isWhile(node: ?Object, opts?: Object): boolean {
  if (!node) return false;

  const nodeType = node.type;
  if (
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 7 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 3524..3541
packages/babel-types/src/validators/generated/index.js on lines 3739..3756
packages/babel-types/src/validators/generated/index.js on lines 3834..3851
packages/babel-types/src/validators/generated/index.js on lines 4130..4147
packages/babel-types/src/validators/generated/index.js on lines 4167..4184
packages/babel-types/src/validators/generated/index.js on lines 4205..4222
packages/babel-types/src/validators/generated/index.js on lines 4449..4466

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 8 locations. Consider refactoring.
Open

export function isObjectMember(node: ?Object, opts?: Object): boolean {
  if (!node) return false;

  const nodeType = node.type;
  if (
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 7 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 3524..3541
packages/babel-types/src/validators/generated/index.js on lines 3739..3756
packages/babel-types/src/validators/generated/index.js on lines 3778..3795
packages/babel-types/src/validators/generated/index.js on lines 3834..3851
packages/babel-types/src/validators/generated/index.js on lines 4167..4184
packages/babel-types/src/validators/generated/index.js on lines 4205..4222
packages/babel-types/src/validators/generated/index.js on lines 4449..4466

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

      if (this.match(tt.bracketL)) {
        let braceStackCounter = 1;
        this.next();

        while (braceStackCounter > 0) {
Severity: Major
Found in packages/babel-parser/src/plugins/typescript/index.js and 1 other location - About 3 hrs to fix
packages/babel-parser/src/plugins/typescript/index.js on lines 904..917

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

      if (this.match(tt.braceL)) {
        let braceStackCounter = 1;
        this.next();

        while (braceStackCounter > 0) {
Severity: Major
Found in packages/babel-parser/src/plugins/typescript/index.js and 1 other location - About 3 hrs to fix
packages/babel-parser/src/plugins/typescript/index.js on lines 919..932

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    post() {
      if (this.opts.debug && this.usesRegenerator) {
        let filename = this.file.opts.filename;
        // normalize filename to generate consistent preset-env test fixtures
        if (process.env.BABEL_ENV === "test") {
Severity: Major
Found in packages/babel-preset-env/src/polyfills/regenerator/usage-plugin.js and 1 other location - About 3 hrs to fix
packages/babel-preset-env/src/polyfills/regenerator/entry-plugin.js on lines 34..45

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    post() {
      if (this.opts.debug && this.regeneratorImportExcluded) {
        let filename = this.file.opts.filename;
        // normalize filename to generate consistent preset-env test fixtures
        if (process.env.BABEL_ENV === "test") {
Severity: Major
Found in packages/babel-preset-env/src/polyfills/regenerator/entry-plugin.js and 1 other location - About 3 hrs to fix
packages/babel-preset-env/src/polyfills/regenerator/usage-plugin.js on lines 22..33

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 109.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    key: {
      validate: (function () {
        const normal = assertNodeType(
          "Identifier",
          "StringLiteral",
Severity: Major
Found in packages/babel-types/src/definitions/core.js and 1 other location - About 3 hrs to fix
packages/babel-types/src/definitions/core.js on lines 805..827

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 107.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    key: {
      validate: (function () {
        const normal = assertNodeType(
          "Identifier",
          "StringLiteral",
Severity: Major
Found in packages/babel-types/src/definitions/core.js and 1 other location - About 3 hrs to fix
packages/babel-types/src/definitions/core.js on lines 740..762

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 107.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

export function isRestProperty(node: ?Object, opts?: Object): boolean {
  console.trace("The node type RestProperty has been renamed to RestElement");
  if (!node) return false;

  const nodeType = node.type;
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 3 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 4658..4674
packages/babel-types/src/validators/generated/index.js on lines 4675..4689
packages/babel-types/src/validators/generated/index.js on lines 4705..4721

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 104.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

export function isSpreadProperty(node: ?Object, opts?: Object): boolean {
  console.trace(
    "The node type SpreadProperty has been renamed to SpreadElement",
  );
  if (!node) return false;
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 3 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 4658..4674
packages/babel-types/src/validators/generated/index.js on lines 4675..4689
packages/babel-types/src/validators/generated/index.js on lines 4690..4704

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 104.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

export function isNumberLiteral(node: ?Object, opts?: Object): boolean {
  console.trace(
    "The node type NumberLiteral has been renamed to NumericLiteral",
  );
  if (!node) return false;
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 3 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 4675..4689
packages/babel-types/src/validators/generated/index.js on lines 4690..4704
packages/babel-types/src/validators/generated/index.js on lines 4705..4721

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 104.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

export function isRegexLiteral(node: ?Object, opts?: Object): boolean {
  console.trace("The node type RegexLiteral has been renamed to RegExpLiteral");
  if (!node) return false;

  const nodeType = node.type;
Severity: Major
Found in packages/babel-types/src/validators/generated/index.js and 3 other locations - About 3 hrs to fix
packages/babel-types/src/validators/generated/index.js on lines 4658..4674
packages/babel-types/src/validators/generated/index.js on lines 4690..4704
packages/babel-types/src/validators/generated/index.js on lines 4705..4721

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 104.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

export const transform: Transform = (function transform(code, opts, callback) {
  if (typeof opts === "function") {
    callback = opts;
    opts = undefined;
  }
Severity: Major
Found in packages/babel-core/src/transform.js and 1 other location - About 3 hrs to fix
packages/babel-core/src/parse.js on lines 36..47

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 100.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

export const parse: Parse = (function parse(code, opts, callback) {
  if (typeof opts === "function") {
    callback = opts;
    opts = undefined;
  }
Severity: Major
Found in packages/babel-core/src/parse.js and 1 other location - About 3 hrs to fix
packages/babel-core/src/transform.js on lines 30..41

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 100.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

export function makeStrongCache<ArgT, ResultT, SideChannel>(
  handler: (ArgT, CacheConfigurator<SideChannel>) => Handler<ResultT> | ResultT,
): (ArgT, SideChannel) => Handler<ResultT> {
  return makeCachedFunction<ArgT, ResultT, SideChannel, *>(Map, handler);
}
Severity: Major
Found in packages/babel-core/src/config/caching.js and 1 other location - About 3 hrs to fix
packages/babel-core/src/config/caching.js on lines 46..50

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 100.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

export function makeWeakCache<ArgT, ResultT, SideChannel>(
  handler: (ArgT, CacheConfigurator<SideChannel>) => Handler<ResultT> | ResultT,
): (ArgT, SideChannel) => Handler<ResultT> {
  return makeCachedFunction<ArgT, ResultT, SideChannel, *>(WeakMap, handler);
}
Severity: Major
Found in packages/babel-core/src/config/caching.js and 1 other location - About 3 hrs to fix
packages/babel-core/src/config/caching.js on lines 60..64

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 100.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

          } else if (!boolsLen && !strsLen && numsLen >= defaultedLen) {
            for (const member of members.defaultedMembers) {
              this.flowEnumErrorNumberMemberNotInitialized(member.start, {
                enumName,
                memberName: member.id.name,
Severity: Major
Found in packages/babel-parser/src/plugins/flow.js and 1 other location - About 3 hrs to fix
packages/babel-parser/src/plugins/flow.js on lines 3420..3443

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 98.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

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