"typechecker" meaning in English

{
  "etymology_links": [
    [
      "type",
      "type#English"
    ],
    [
      "checker",
      "checker#English"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "type",
        "3": "checker"
      },
      "expansion": "type + checker",
      "name": "compound"
    }
  ],
  "etymology_text": "From type + checker.",
  "forms": [
    {
      "form": "typecheckers",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "type checker",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "typechecker (plural typecheckers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Algorithms",
          "orig": "en:Algorithms",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Programming",
          "orig": "en:Programming",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              50,
              62
            ]
          ],
          "ref": "2015 April 2, James Somers, “Toolkits for the Mind”, in MIT Technology Review:",
          "text": "The catch is that to get the full benefits of the type checker, the programmers have to add complex annotations to their code.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A system or algorithm that verifies values against their required data types, according to the type system of the language."
      ],
      "id": "en-typechecker-en-noun-LdBpVdeQ",
      "links": [
        [
          "computer science",
          "computer science"
        ],
        [
          "programming",
          "programming#Noun"
        ],
        [
          "system",
          "system"
        ],
        [
          "algorithm",
          "algorithm"
        ],
        [
          "verifies",
          "verify"
        ],
        [
          "value",
          "value"
        ],
        [
          "data type",
          "data type"
        ],
        [
          "type system",
          "type system"
        ]
      ],
      "raw_glosses": [
        "(computer science, programming) A system or algorithm that verifies values against their required data types, according to the type system of the language."
      ],
      "related": [
        {
          "tags": [
            "verb"
          ],
          "word": "typecheck"
        }
      ],
      "topics": [
        "computer",
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "science",
        "sciences"
      ]
    }
  ],
  "word": "typechecker"
}

{
  "etymology_links": [
    [
      "type",
      "type#English"
    ],
    [
      "checker",
      "checker#English"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "type",
        "3": "checker"
      },
      "expansion": "type + checker",
      "name": "compound"
    }
  ],
  "etymology_text": "From type + checker.",
  "forms": [
    {
      "form": "typecheckers",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "type checker",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "typechecker (plural typecheckers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "tags": [
        "verb"
      ],
      "word": "typecheck"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Algorithms",
        "en:Programming"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              50,
              62
            ]
          ],
          "ref": "2015 April 2, James Somers, “Toolkits for the Mind”, in MIT Technology Review:",
          "text": "The catch is that to get the full benefits of the type checker, the programmers have to add complex annotations to their code.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A system or algorithm that verifies values against their required data types, according to the type system of the language."
      ],
      "links": [
        [
          "computer science",
          "computer science"
        ],
        [
          "programming",
          "programming#Noun"
        ],
        [
          "system",
          "system"
        ],
        [
          "algorithm",
          "algorithm"
        ],
        [
          "verifies",
          "verify"
        ],
        [
          "value",
          "value"
        ],
        [
          "data type",
          "data type"
        ],
        [
          "type system",
          "type system"
        ]
      ],
      "raw_glosses": [
        "(computer science, programming) A system or algorithm that verifies values against their required data types, according to the type system of the language."
      ],
      "topics": [
        "computer",
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "science",
        "sciences"
      ]
    }
  ],
  "word": "typechecker"
}