1 | const Ajv = require("ajv")
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2 | const ajv = new Ajv({allErrors: true})
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3 |
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4 | const schema = {
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5 | type: "object",
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6 | properties: {
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7 | foo: {type: "string"},
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8 | bar: {type: "number", maximum: 3},
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9 | },
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10 | required: ["foo", "bar"],
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11 | additionalProperties: false,
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12 | }
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13 |
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14 | const validate = ajv.compile(schema)
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15 |
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16 | test({foo: "abc", bar: 2})
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17 | test({foo: 2, bar: 4})
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18 |
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19 | function test(data) {
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20 | const valid = validate(data)
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21 | if (valid) console.log("Valid!")
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22 | else console.log("Invalid: " + ajv.errorsText(validate.errors))
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23 | }
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