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

export function assertSpreadProperty(node: Object, opts: Object): void {
  console.trace(
    "The node type SpreadProperty has been renamed to SpreadElement",
  );
  assert("SpreadProperty", node, opts);
Severity: Major
Found in packages/babel-types/src/asserts/generated/index.js and 3 other locations - About 40 mins to fix
packages/babel-types/src/asserts/generated/index.js on lines 1211..1216
packages/babel-types/src/asserts/generated/index.js on lines 1217..1220
packages/babel-types/src/asserts/generated/index.js on lines 1221..1224

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 49.

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

defineType("TSIndexedAccessType", {
  aliases: ["TSType"],
  visitor: ["objectType", "indexType"],
  fields: {
    objectType: validateType("TSType"),
Severity: Major
Found in packages/babel-types/src/definitions/typescript.js and 7 other locations - About 40 mins to fix
packages/babel-types/src/definitions/flow.js on lines 532..539
packages/babel-types/src/definitions/flow.js on lines 541..548
packages/babel-types/src/definitions/typescript.js on lines 66..73
packages/babel-types/src/definitions/typescript.js on lines 167..174
packages/babel-types/src/definitions/typescript.js on lines 315..322
packages/babel-types/src/definitions/typescript.js on lines 355..362
packages/babel-types/src/definitions/typescript.js on lines 364..371

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 48.

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

defineType("EnumNumberMember", {
  aliases: ["EnumMember"],
  visitor: ["id", "init"],
  fields: {
    id: validateType("Identifier"),
Severity: Major
Found in packages/babel-types/src/definitions/flow.js and 7 other locations - About 40 mins to fix
packages/babel-types/src/definitions/flow.js on lines 541..548
packages/babel-types/src/definitions/typescript.js on lines 66..73
packages/babel-types/src/definitions/typescript.js on lines 167..174
packages/babel-types/src/definitions/typescript.js on lines 282..289
packages/babel-types/src/definitions/typescript.js on lines 315..322
packages/babel-types/src/definitions/typescript.js on lines 355..362
packages/babel-types/src/definitions/typescript.js on lines 364..371

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 48.

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 5 locations. Consider refactoring.
Open

      if (this.isRelational("<")) {
        node.typeParameters = this.flowParseTypeParameterDeclaration();
      } else {
        node.typeParameters = null;
      }
Severity: Major
Found in packages/babel-parser/src/plugins/flow.js and 4 other locations - About 40 mins to fix
packages/babel-parser/src/plugins/flow.js on lines 297..301
packages/babel-parser/src/plugins/flow.js on lines 620..624
packages/babel-parser/src/plugins/flow.js on lines 669..673
packages/babel-parser/src/plugins/flow.js on lines 2332..2336

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 48.

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 3 locations. Consider refactoring.
Open

export function assertBoolean(loc: GeneralPath, value: mixed): boolean | void {
  if (value !== undefined && typeof value !== "boolean") {
    throw new Error(`${msg(loc)} must be a boolean, or undefined`);
  }
  return value;
Severity: Minor
Found in packages/babel-core/src/config/validation/option-assertions.js and 2 other locations - About 40 mins to fix
packages/babel-core/src/config/validation/option-assertions.js on lines 171..176
packages/babel-core/src/config/validation/option-assertions.js on lines 178..186

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 48.

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

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

const version = pkg.version.split(".").reduce((v, x) => v * 1e5 + +x, 0);
Severity: Minor
Found in packages/babel-helper-create-class-features-plugin/src/index.js and 1 other location - About 40 mins to fix
packages/babel-helper-create-regexp-features-plugin/src/index.js on lines 20..20

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 48.

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 5 locations. Consider refactoring.
Open

      if (this.isRelational("<")) {
        node.typeParameters = this.flowParseTypeParameterDeclaration();
      } else {
        node.typeParameters = null;
      }
Severity: Major
Found in packages/babel-parser/src/plugins/flow.js and 4 other locations - About 40 mins to fix
packages/babel-parser/src/plugins/flow.js on lines 297..301
packages/babel-parser/src/plugins/flow.js on lines 577..581
packages/babel-parser/src/plugins/flow.js on lines 620..624
packages/babel-parser/src/plugins/flow.js on lines 2332..2336

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 48.

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

defineType("TSExpressionWithTypeArguments", {
  aliases: ["TSType"],
  visitor: ["expression", "typeParameters"],
  fields: {
    expression: validateType("TSEntityName"),
Severity: Major
Found in packages/babel-types/src/definitions/typescript.js and 7 other locations - About 40 mins to fix
packages/babel-types/src/definitions/flow.js on lines 532..539
packages/babel-types/src/definitions/flow.js on lines 541..548
packages/babel-types/src/definitions/typescript.js on lines 66..73
packages/babel-types/src/definitions/typescript.js on lines 167..174
packages/babel-types/src/definitions/typescript.js on lines 282..289
packages/babel-types/src/definitions/typescript.js on lines 355..362
packages/babel-types/src/definitions/typescript.js on lines 364..371

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 48.

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 5 locations. Consider refactoring.
Open

      if (this.isRelational("<")) {
        typeNode.typeParameters = this.flowParseTypeParameterDeclaration();
      } else {
        typeNode.typeParameters = null;
      }
Severity: Major
Found in packages/babel-parser/src/plugins/flow.js and 4 other locations - About 40 mins to fix
packages/babel-parser/src/plugins/flow.js on lines 577..581
packages/babel-parser/src/plugins/flow.js on lines 620..624
packages/babel-parser/src/plugins/flow.js on lines 669..673
packages/babel-parser/src/plugins/flow.js on lines 2332..2336

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 48.

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 5 locations. Consider refactoring.
Open

          if (this.isRelational("<")) {
            node.typeParameters = this.flowParseTypeParameterInstantiation();
          } else {
            node.typeParameters = null;
          }
Severity: Major
Found in packages/babel-parser/src/plugins/flow.js and 4 other locations - About 40 mins to fix
packages/babel-parser/src/plugins/flow.js on lines 297..301
packages/babel-parser/src/plugins/flow.js on lines 577..581
packages/babel-parser/src/plugins/flow.js on lines 620..624
packages/babel-parser/src/plugins/flow.js on lines 669..673

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 48.

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

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

const version = pkg.version.split(".").reduce((v, x) => v * 1e5 + +x, 0);
Severity: Minor
Found in packages/babel-helper-create-regexp-features-plugin/src/index.js and 1 other location - About 40 mins to fix
packages/babel-helper-create-class-features-plugin/src/index.js on lines 30..30

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 48.

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 3 locations. Consider refactoring.
Open

export function EnumStringBody(node: Object) {
  const { explicitType } = node;
  enumExplicitType(this, "string", explicitType);
  enumBody(this, node);
}
Severity: Minor
Found in packages/babel-generator/src/generators/flow.js and 2 other locations - About 40 mins to fix
packages/babel-generator/src/generators/flow.js on lines 172..176
packages/babel-generator/src/generators/flow.js on lines 178..182

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 48.

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 default function cloneDeepWithoutLoc<T: Object>(node: T): T {
  return cloneNode(node, /* deep */ true, /* withoutLoc */ true);
}
Severity: Minor
Found in packages/babel-types/src/clone/cloneDeepWithoutLoc.js and 1 other location - About 40 mins to fix
packages/babel-types/src/clone/cloneWithoutLoc.js on lines 6..8

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 48.

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

defineType("EnumStringMember", {
  aliases: ["EnumMember"],
  visitor: ["id", "init"],
  fields: {
    id: validateType("Identifier"),
Severity: Major
Found in packages/babel-types/src/definitions/flow.js and 7 other locations - About 40 mins to fix
packages/babel-types/src/definitions/flow.js on lines 532..539
packages/babel-types/src/definitions/typescript.js on lines 66..73
packages/babel-types/src/definitions/typescript.js on lines 167..174
packages/babel-types/src/definitions/typescript.js on lines 282..289
packages/babel-types/src/definitions/typescript.js on lines 315..322
packages/babel-types/src/definitions/typescript.js on lines 355..362
packages/babel-types/src/definitions/typescript.js on lines 364..371

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 48.

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 TSInferType(node) {
  this.token("infer");
  this.space();
  this.print(node.typeParameter);
}
Severity: Minor
Found in packages/babel-generator/src/generators/typescript.js and 1 other location - About 40 mins to fix
packages/babel-generator/src/generators/typescript.js on lines 213..217

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 48.

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

defineType("TSQualifiedName", {
  aliases: ["TSEntityName"],
  visitor: ["left", "right"],
  fields: {
    left: validateType("TSEntityName"),
Severity: Major
Found in packages/babel-types/src/definitions/typescript.js and 7 other locations - About 40 mins to fix
packages/babel-types/src/definitions/flow.js on lines 532..539
packages/babel-types/src/definitions/flow.js on lines 541..548
packages/babel-types/src/definitions/typescript.js on lines 167..174
packages/babel-types/src/definitions/typescript.js on lines 282..289
packages/babel-types/src/definitions/typescript.js on lines 315..322
packages/babel-types/src/definitions/typescript.js on lines 355..362
packages/babel-types/src/definitions/typescript.js on lines 364..371

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 48.

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

defineType("TSTypeReference", {
  aliases: ["TSType"],
  visitor: ["typeName", "typeParameters"],
  fields: {
    typeName: validateType("TSEntityName"),
Severity: Major
Found in packages/babel-types/src/definitions/typescript.js and 7 other locations - About 40 mins to fix
packages/babel-types/src/definitions/flow.js on lines 532..539
packages/babel-types/src/definitions/flow.js on lines 541..548
packages/babel-types/src/definitions/typescript.js on lines 66..73
packages/babel-types/src/definitions/typescript.js on lines 282..289
packages/babel-types/src/definitions/typescript.js on lines 315..322
packages/babel-types/src/definitions/typescript.js on lines 355..362
packages/babel-types/src/definitions/typescript.js on lines 364..371

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 48.

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

defineType("TSTypeAssertion", {
  aliases: ["Expression"],
  visitor: ["typeAnnotation", "expression"],
  fields: {
    typeAnnotation: validateType("TSType"),
Severity: Major
Found in packages/babel-types/src/definitions/typescript.js and 7 other locations - About 40 mins to fix
packages/babel-types/src/definitions/flow.js on lines 532..539
packages/babel-types/src/definitions/flow.js on lines 541..548
packages/babel-types/src/definitions/typescript.js on lines 66..73
packages/babel-types/src/definitions/typescript.js on lines 167..174
packages/babel-types/src/definitions/typescript.js on lines 282..289
packages/babel-types/src/definitions/typescript.js on lines 315..322
packages/babel-types/src/definitions/typescript.js on lines 355..362

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 48.

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 3 locations. Consider refactoring.
Open

export function assertFunction(
  loc: GeneralPath,
  value: mixed,
): Function | void {
  if (value !== undefined && typeof value !== "function") {
Severity: Minor
Found in packages/babel-core/src/config/validation/option-assertions.js and 2 other locations - About 40 mins to fix
packages/babel-core/src/config/validation/option-assertions.js on lines 171..176
packages/babel-core/src/config/validation/option-assertions.js on lines 188..193

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 48.

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 3 locations. Consider refactoring.
Open

export function EnumBooleanBody(node: Object) {
  const { explicitType } = node;
  enumExplicitType(this, "boolean", explicitType);
  enumBody(this, node);
}
Severity: Minor
Found in packages/babel-generator/src/generators/flow.js and 2 other locations - About 40 mins to fix
packages/babel-generator/src/generators/flow.js on lines 178..182
packages/babel-generator/src/generators/flow.js on lines 184..188

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 48.

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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