BREAKING(std): reorganization (#5087)

* Prepend underscores to private modules
* Remove collectUint8Arrays() It would be a misuse of Deno.iter()'s result.
* Move std/_util/async.ts to std/async
* Move std/util/sha*.ts to std/hash

14 files changed, 0 insertions, 831 deletions

diff --git a/std/encoding/yaml/type/binary.ts b/std/encoding/yaml/type/binary.ts
deleted file mode 100644
index f4823b3f7..000000000
--- a/std/encoding/yaml/type/binary.ts
+++ /dev/null
@@ -1,139 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { Any } from "../utils.ts";
-
-const { Buffer } = Deno;
-
-// [ 64, 65, 66 ] -> [ padding, CR, LF ]
-const BASE64_MAP =
-  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r";
-
-function resolveYamlBinary(data: Any): boolean {
-  if (data === null) return false;
-
-  let code: number;
-  let bitlen = 0;
-  const max = data.length;
-  const map = BASE64_MAP;
-
-  // Convert one by one.
-  for (let idx = 0; idx < max; idx++) {
-    code = map.indexOf(data.charAt(idx));
-
-    // Skip CR/LF
-    if (code > 64) continue;
-
-    // Fail on illegal characters
-    if (code < 0) return false;
-
-    bitlen += 6;
-  }
-
-  // If there are any bits left, source was corrupted
-  return bitlen % 8 === 0;
-}
-
-function constructYamlBinary(data: string): Deno.Buffer {
-  // remove CR/LF & padding to simplify scan
-  const input = data.replace(/[\r\n=]/g, "");
-  const max = input.length;
-  const map = BASE64_MAP;
-
-  // Collect by 6*4 bits (3 bytes)
-
-  const result = [];
-  let bits = 0;
-  for (let idx = 0; idx < max; idx++) {
-    if (idx % 4 === 0 && idx) {
-      result.push((bits >> 16) & 0xff);
-      result.push((bits >> 8) & 0xff);
-      result.push(bits & 0xff);
-    }
-
-    bits = (bits << 6) | map.indexOf(input.charAt(idx));
-  }
-
-  // Dump tail
-
-  const tailbits = (max % 4) * 6;
-
-  if (tailbits === 0) {
-    result.push((bits >> 16) & 0xff);
-    result.push((bits >> 8) & 0xff);
-    result.push(bits & 0xff);
-  } else if (tailbits === 18) {
-    result.push((bits >> 10) & 0xff);
-    result.push((bits >> 2) & 0xff);
-  } else if (tailbits === 12) {
-    result.push((bits >> 4) & 0xff);
-  }
-
-  return new Buffer(new Uint8Array(result));
-}
-
-function representYamlBinary(object: Uint8Array): string {
-  const max = object.length;
-  const map = BASE64_MAP;
-
-  // Convert every three bytes to 4 ASCII characters.
-
-  let result = "";
-  let bits = 0;
-  for (let idx = 0; idx < max; idx++) {
-    if (idx % 3 === 0 && idx) {
-      result += map[(bits >> 18) & 0x3f];
-      result += map[(bits >> 12) & 0x3f];
-      result += map[(bits >> 6) & 0x3f];
-      result += map[bits & 0x3f];
-    }
-
-    bits = (bits << 8) + object[idx];
-  }
-
-  // Dump tail
-
-  const tail = max % 3;
-
-  if (tail === 0) {
-    result += map[(bits >> 18) & 0x3f];
-    result += map[(bits >> 12) & 0x3f];
-    result += map[(bits >> 6) & 0x3f];
-    result += map[bits & 0x3f];
-  } else if (tail === 2) {
-    result += map[(bits >> 10) & 0x3f];
-    result += map[(bits >> 4) & 0x3f];
-    result += map[(bits << 2) & 0x3f];
-    result += map[64];
-  } else if (tail === 1) {
-    result += map[(bits >> 2) & 0x3f];
-    result += map[(bits << 4) & 0x3f];
-    result += map[64];
-    result += map[64];
-  }
-
-  return result;
-}
-
-function isBinary(obj: Any): obj is Deno.Buffer {
-  const buf = new Buffer();
-  try {
-    if (0 > buf.readFromSync(obj as Deno.Buffer)) return true;
-    return false;
-  } catch {
-    return false;
-  } finally {
-    buf.reset();
-  }
-}
-
-export const binary = new Type("tag:yaml.org,2002:binary", {
-  construct: constructYamlBinary,
-  kind: "scalar",
-  predicate: isBinary,
-  represent: representYamlBinary,
-  resolve: resolveYamlBinary,
-});
diff --git a/std/encoding/yaml/type/bool.ts b/std/encoding/yaml/type/bool.ts
deleted file mode 100644
index a5a85cf9e..000000000
--- a/std/encoding/yaml/type/bool.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { isBoolean } from "../utils.ts";
-
-function resolveYamlBoolean(data: string): boolean {
-  const max = data.length;
-
-  return (
-    (max === 4 && (data === "true" || data === "True" || data === "TRUE")) ||
-    (max === 5 && (data === "false" || data === "False" || data === "FALSE"))
-  );
-}
-
-function constructYamlBoolean(data: string): boolean {
-  return data === "true" || data === "True" || data === "TRUE";
-}
-
-export const bool = new Type("tag:yaml.org,2002:bool", {
-  construct: constructYamlBoolean,
-  defaultStyle: "lowercase",
-  kind: "scalar",
-  predicate: isBoolean,
-  represent: {
-    lowercase(object: boolean): string {
-      return object ? "true" : "false";
-    },
-    uppercase(object: boolean): string {
-      return object ? "TRUE" : "FALSE";
-    },
-    camelcase(object: boolean): string {
-      return object ? "True" : "False";
-    },
-  },
-  resolve: resolveYamlBoolean,
-});
diff --git a/std/encoding/yaml/type/float.ts b/std/encoding/yaml/type/float.ts
deleted file mode 100644
index 5ae0689b2..000000000
--- a/std/encoding/yaml/type/float.ts
+++ /dev/null
@@ -1,125 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { StyleVariant, Type } from "../type.ts";
-import { isNegativeZero, Any } from "../utils.ts";
-
-const YAML_FLOAT_PATTERN = new RegExp(
-  // 2.5e4, 2.5 and integers
-  "^(?:[-+]?(?:0|[1-9][0-9_]*)(?:\\.[0-9_]*)?(?:[eE][-+]?[0-9]+)?" +
-    // .2e4, .2
-    // special case, seems not from spec
-    "|\\.[0-9_]+(?:[eE][-+]?[0-9]+)?" +
-    // 20:59
-    "|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\.[0-9_]*" +
-    // .inf
-    "|[-+]?\\.(?:inf|Inf|INF)" +
-    // .nan
-    "|\\.(?:nan|NaN|NAN))$"
-);
-
-function resolveYamlFloat(data: string): boolean {
-  if (
-    !YAML_FLOAT_PATTERN.test(data) ||
-    // Quick hack to not allow integers end with `_`
-    // Probably should update regexp & check speed
-    data[data.length - 1] === "_"
-  ) {
-    return false;
-  }
-
-  return true;
-}
-
-function constructYamlFloat(data: string): number {
-  let value = data.replace(/_/g, "").toLowerCase();
-  const sign = value[0] === "-" ? -1 : 1;
-  const digits: number[] = [];
-
-  if ("+-".indexOf(value[0]) >= 0) {
-    value = value.slice(1);
-  }
-
-  if (value === ".inf") {
-    return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
-  }
-  if (value === ".nan") {
-    return NaN;
-  }
-  if (value.indexOf(":") >= 0) {
-    value.split(":").forEach((v): void => {
-      digits.unshift(parseFloat(v));
-    });
-
-    let valueNb = 0.0;
-    let base = 1;
-
-    digits.forEach((d): void => {
-      valueNb += d * base;
-      base *= 60;
-    });
-
-    return sign * valueNb;
-  }
-  return sign * parseFloat(value);
-}
-
-const SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;
-
-function representYamlFloat(object: Any, style?: StyleVariant): Any {
-  if (isNaN(object)) {
-    switch (style) {
-      case "lowercase":
-        return ".nan";
-      case "uppercase":
-        return ".NAN";
-      case "camelcase":
-        return ".NaN";
-    }
-  } else if (Number.POSITIVE_INFINITY === object) {
-    switch (style) {
-      case "lowercase":
-        return ".inf";
-      case "uppercase":
-        return ".INF";
-      case "camelcase":
-        return ".Inf";
-    }
-  } else if (Number.NEGATIVE_INFINITY === object) {
-    switch (style) {
-      case "lowercase":
-        return "-.inf";
-      case "uppercase":
-        return "-.INF";
-      case "camelcase":
-        return "-.Inf";
-    }
-  } else if (isNegativeZero(object)) {
-    return "-0.0";
-  }
-
-  const res = object.toString(10);
-
-  // JS stringifier can build scientific format without dots: 5e-100,
-  // while YAML requres dot: 5.e-100. Fix it with simple hack
-
-  return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace("e", ".e") : res;
-}
-
-function isFloat(object: Any): boolean {
-  return (
-    Object.prototype.toString.call(object) === "[object Number]" &&
-    (object % 1 !== 0 || isNegativeZero(object))
-  );
-}
-
-export const float = new Type("tag:yaml.org,2002:float", {
-  construct: constructYamlFloat,
-  defaultStyle: "lowercase",
-  kind: "scalar",
-  predicate: isFloat,
-  represent: representYamlFloat,
-  resolve: resolveYamlFloat,
-});
diff --git a/std/encoding/yaml/type/int.ts b/std/encoding/yaml/type/int.ts
deleted file mode 100644
index 6a86aafe9..000000000
--- a/std/encoding/yaml/type/int.ts
+++ /dev/null
@@ -1,188 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { isNegativeZero, Any } from "../utils.ts";
-
-function isHexCode(c: number): boolean {
-  return (
-    (0x30 <= /* 0 */ c && c <= 0x39) /* 9 */ ||
-    (0x41 <= /* A */ c && c <= 0x46) /* F */ ||
-    (0x61 <= /* a */ c && c <= 0x66) /* f */
-  );
-}
-
-function isOctCode(c: number): boolean {
-  return 0x30 <= /* 0 */ c && c <= 0x37 /* 7 */;
-}
-
-function isDecCode(c: number): boolean {
-  return 0x30 <= /* 0 */ c && c <= 0x39 /* 9 */;
-}
-
-function resolveYamlInteger(data: string): boolean {
-  const max = data.length;
-  let index = 0;
-  let hasDigits = false;
-
-  if (!max) return false;
-
-  let ch = data[index];
-
-  // sign
-  if (ch === "-" || ch === "+") {
-    ch = data[++index];
-  }
-
-  if (ch === "0") {
-    // 0
-    if (index + 1 === max) return true;
-    ch = data[++index];
-
-    // base 2, base 8, base 16
-
-    if (ch === "b") {
-      // base 2
-      index++;
-
-      for (; index < max; index++) {
-        ch = data[index];
-        if (ch === "_") continue;
-        if (ch !== "0" && ch !== "1") return false;
-        hasDigits = true;
-      }
-      return hasDigits && ch !== "_";
-    }
-
-    if (ch === "x") {
-      // base 16
-      index++;
-
-      for (; index < max; index++) {
-        ch = data[index];
-        if (ch === "_") continue;
-        if (!isHexCode(data.charCodeAt(index))) return false;
-        hasDigits = true;
-      }
-      return hasDigits && ch !== "_";
-    }
-
-    // base 8
-    for (; index < max; index++) {
-      ch = data[index];
-      if (ch === "_") continue;
-      if (!isOctCode(data.charCodeAt(index))) return false;
-      hasDigits = true;
-    }
-    return hasDigits && ch !== "_";
-  }
-
-  // base 10 (except 0) or base 60
-
-  // value should not start with `_`;
-  if (ch === "_") return false;
-
-  for (; index < max; index++) {
-    ch = data[index];
-    if (ch === "_") continue;
-    if (ch === ":") break;
-    if (!isDecCode(data.charCodeAt(index))) {
-      return false;
-    }
-    hasDigits = true;
-  }
-
-  // Should have digits and should not end with `_`
-  if (!hasDigits || ch === "_") return false;
-
-  // if !base60 - done;
-  if (ch !== ":") return true;
-
-  // base60 almost not used, no needs to optimize
-  return /^(:[0-5]?[0-9])+$/.test(data.slice(index));
-}
-
-function constructYamlInteger(data: string): number {
-  let value = data;
-  const digits: number[] = [];
-
-  if (value.indexOf("_") !== -1) {
-    value = value.replace(/_/g, "");
-  }
-
-  let sign = 1;
-  let ch = value[0];
-  if (ch === "-" || ch === "+") {
-    if (ch === "-") sign = -1;
-    value = value.slice(1);
-    ch = value[0];
-  }
-
-  if (value === "0") return 0;
-
-  if (ch === "0") {
-    if (value[1] === "b") return sign * parseInt(value.slice(2), 2);
-    if (value[1] === "x") return sign * parseInt(value, 16);
-    return sign * parseInt(value, 8);
-  }
-
-  if (value.indexOf(":") !== -1) {
-    value.split(":").forEach((v): void => {
-      digits.unshift(parseInt(v, 10));
-    });
-
-    let valueInt = 0;
-    let base = 1;
-
-    digits.forEach((d): void => {
-      valueInt += d * base;
-      base *= 60;
-    });
-
-    return sign * valueInt;
-  }
-
-  return sign * parseInt(value, 10);
-}
-
-function isInteger(object: Any): boolean {
-  return (
-    Object.prototype.toString.call(object) === "[object Number]" &&
-    object % 1 === 0 &&
-    !isNegativeZero(object)
-  );
-}
-
-export const int = new Type("tag:yaml.org,2002:int", {
-  construct: constructYamlInteger,
-  defaultStyle: "decimal",
-  kind: "scalar",
-  predicate: isInteger,
-  represent: {
-    binary(obj: number): string {
-      return obj >= 0
-        ? `0b${obj.toString(2)}`
-        : `-0b${obj.toString(2).slice(1)}`;
-    },
-    octal(obj: number): string {
-      return obj >= 0 ? `0${obj.toString(8)}` : `-0${obj.toString(8).slice(1)}`;
-    },
-    decimal(obj: number): string {
-      return obj.toString(10);
-    },
-    hexadecimal(obj: number): string {
-      return obj >= 0
-        ? `0x${obj.toString(16).toUpperCase()}`
-        : `-0x${obj.toString(16).toUpperCase().slice(1)}`;
-    },
-  },
-  resolve: resolveYamlInteger,
-  styleAliases: {
-    binary: [2, "bin"],
-    decimal: [10, "dec"],
-    hexadecimal: [16, "hex"],
-    octal: [8, "oct"],
-  },
-});
diff --git a/std/encoding/yaml/type/map.ts b/std/encoding/yaml/type/map.ts
deleted file mode 100644
index dcd99abca..000000000
--- a/std/encoding/yaml/type/map.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { Any } from "../utils.ts";
-
-export const map = new Type("tag:yaml.org,2002:map", {
-  construct(data): Any {
-    return data !== null ? data : {};
-  },
-  kind: "mapping",
-});
diff --git a/std/encoding/yaml/type/merge.ts b/std/encoding/yaml/type/merge.ts
deleted file mode 100644
index 68314bf2e..000000000
--- a/std/encoding/yaml/type/merge.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-
-function resolveYamlMerge(data: string): boolean {
-  return data === "<<" || data === null;
-}
-
-export const merge = new Type("tag:yaml.org,2002:merge", {
-  kind: "scalar",
-  resolve: resolveYamlMerge,
-});
diff --git a/std/encoding/yaml/type/mod.ts b/std/encoding/yaml/type/mod.ts
deleted file mode 100644
index 15f33301e..000000000
--- a/std/encoding/yaml/type/mod.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-export { binary } from "./binary.ts";
-export { bool } from "./bool.ts";
-export { float } from "./float.ts";
-export { int } from "./int.ts";
-export { map } from "./map.ts";
-export { merge } from "./merge.ts";
-export { nil } from "./nil.ts";
-export { omap } from "./omap.ts";
-export { pairs } from "./pairs.ts";
-export { seq } from "./seq.ts";
-export { set } from "./set.ts";
-export { str } from "./str.ts";
-export { timestamp } from "./timestamp.ts";
diff --git a/std/encoding/yaml/type/nil.ts b/std/encoding/yaml/type/nil.ts
deleted file mode 100644
index 8a48d02fb..000000000
--- a/std/encoding/yaml/type/nil.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-
-function resolveYamlNull(data: string): boolean {
-  const max = data.length;
-
-  return (
-    (max === 1 && data === "~") ||
-    (max === 4 && (data === "null" || data === "Null" || data === "NULL"))
-  );
-}
-
-function constructYamlNull(): null {
-  return null;
-}
-
-function isNull(object: unknown): object is null {
-  return object === null;
-}
-
-export const nil = new Type("tag:yaml.org,2002:null", {
-  construct: constructYamlNull,
-  defaultStyle: "lowercase",
-  kind: "scalar",
-  predicate: isNull,
-  represent: {
-    canonical(): string {
-      return "~";
-    },
-    lowercase(): string {
-      return "null";
-    },
-    uppercase(): string {
-      return "NULL";
-    },
-    camelcase(): string {
-      return "Null";
-    },
-  },
-  resolve: resolveYamlNull,
-});
diff --git a/std/encoding/yaml/type/omap.ts b/std/encoding/yaml/type/omap.ts
deleted file mode 100644
index d6d751505..000000000
--- a/std/encoding/yaml/type/omap.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { Any } from "../utils.ts";
-
-const _hasOwnProperty = Object.prototype.hasOwnProperty;
-const _toString = Object.prototype.toString;
-
-function resolveYamlOmap(data: Any): boolean {
-  const objectKeys: string[] = [];
-  let pairKey = "";
-  let pairHasKey = false;
-
-  for (const pair of data) {
-    pairHasKey = false;
-
-    if (_toString.call(pair) !== "[object Object]") return false;
-
-    for (pairKey in pair) {
-      if (_hasOwnProperty.call(pair, pairKey)) {
-        if (!pairHasKey) pairHasKey = true;
-        else return false;
-      }
-    }
-
-    if (!pairHasKey) return false;
-
-    if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);
-    else return false;
-  }
-
-  return true;
-}
-
-function constructYamlOmap(data: Any): Any {
-  return data !== null ? data : [];
-}
-
-export const omap = new Type("tag:yaml.org,2002:omap", {
-  construct: constructYamlOmap,
-  kind: "sequence",
-  resolve: resolveYamlOmap,
-});
diff --git a/std/encoding/yaml/type/pairs.ts b/std/encoding/yaml/type/pairs.ts
deleted file mode 100644
index e999748ae..000000000
--- a/std/encoding/yaml/type/pairs.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { Any } from "../utils.ts";
-
-const _toString = Object.prototype.toString;
-
-function resolveYamlPairs(data: Any[][]): boolean {
-  const result = new Array(data.length);
-
-  for (let index = 0; index < data.length; index++) {
-    const pair = data[index];
-
-    if (_toString.call(pair) !== "[object Object]") return false;
-
-    const keys = Object.keys(pair);
-
-    if (keys.length !== 1) return false;
-
-    result[index] = [keys[0], pair[keys[0] as Any]];
-  }
-
-  return true;
-}
-
-function constructYamlPairs(data: string): Any[] {
-  if (data === null) return [];
-
-  const result = new Array(data.length);
-
-  for (let index = 0; index < data.length; index += 1) {
-    const pair = data[index];
-
-    const keys = Object.keys(pair);
-
-    result[index] = [keys[0], pair[keys[0] as Any]];
-  }
-
-  return result;
-}
-
-export const pairs = new Type("tag:yaml.org,2002:pairs", {
-  construct: constructYamlPairs,
-  kind: "sequence",
-  resolve: resolveYamlPairs,
-});
diff --git a/std/encoding/yaml/type/seq.ts b/std/encoding/yaml/type/seq.ts
deleted file mode 100644
index b19565dbc..000000000
--- a/std/encoding/yaml/type/seq.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { Any } from "../utils.ts";
-
-export const seq = new Type("tag:yaml.org,2002:seq", {
-  construct(data): Any {
-    return data !== null ? data : [];
-  },
-  kind: "sequence",
-});
diff --git a/std/encoding/yaml/type/set.ts b/std/encoding/yaml/type/set.ts
deleted file mode 100644
index 0bfe1c8db..000000000
--- a/std/encoding/yaml/type/set.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-import { Any } from "../utils.ts";
-
-const _hasOwnProperty = Object.prototype.hasOwnProperty;
-
-function resolveYamlSet(data: Any): boolean {
-  if (data === null) return true;
-
-  for (const key in data) {
-    if (_hasOwnProperty.call(data, key)) {
-      if (data[key] !== null) return false;
-    }
-  }
-
-  return true;
-}
-
-function constructYamlSet(data: string): Any {
-  return data !== null ? data : {};
-}
-
-export const set = new Type("tag:yaml.org,2002:set", {
-  construct: constructYamlSet,
-  kind: "mapping",
-  resolve: resolveYamlSet,
-});
diff --git a/std/encoding/yaml/type/str.ts b/std/encoding/yaml/type/str.ts
deleted file mode 100644
index cd6e9430f..000000000
--- a/std/encoding/yaml/type/str.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-
-export const str = new Type("tag:yaml.org,2002:str", {
-  construct(data): string {
-    return data !== null ? data : "";
-  },
-  kind: "scalar",
-});
diff --git a/std/encoding/yaml/type/timestamp.ts b/std/encoding/yaml/type/timestamp.ts
deleted file mode 100644
index eb03b3825..000000000
--- a/std/encoding/yaml/type/timestamp.ts
+++ /dev/null
@@ -1,96 +0,0 @@
-// Ported from js-yaml v3.13.1:
-// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
-// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-
-import { Type } from "../type.ts";
-
-const YAML_DATE_REGEXP = new RegExp(
-  "^([0-9][0-9][0-9][0-9])" + // [1] year
-  "-([0-9][0-9])" + // [2] month
-    "-([0-9][0-9])$" // [3] day
-);
-
-const YAML_TIMESTAMP_REGEXP = new RegExp(
-  "^([0-9][0-9][0-9][0-9])" + // [1] year
-  "-([0-9][0-9]?)" + // [2] month
-  "-([0-9][0-9]?)" + // [3] day
-  "(?:[Tt]|[ \\t]+)" + // ...
-  "([0-9][0-9]?)" + // [4] hour
-  ":([0-9][0-9])" + // [5] minute
-  ":([0-9][0-9])" + // [6] second
-  "(?:\\.([0-9]*))?" + // [7] fraction
-  "(?:[ \\t]*(Z|([-+])([0-9][0-9]?)" + // [8] tz [9] tz_sign [10] tz_hour
-    "(?::([0-9][0-9]))?))?$" // [11] tz_minute
-);
-
-function resolveYamlTimestamp(data: string): boolean {
-  if (data === null) return false;
-  if (YAML_DATE_REGEXP.exec(data) !== null) return true;
-  if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
-  return false;
-}
-
-function constructYamlTimestamp(data: string): Date {
-  let match = YAML_DATE_REGEXP.exec(data);
-  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
-
-  if (match === null) throw new Error("Date resolve error");
-
-  // match: [1] year [2] month [3] day
-
-  const year = +match[1];
-  const month = +match[2] - 1; // JS month starts with 0
-  const day = +match[3];
-
-  if (!match[4]) {
-    // no hour
-    return new Date(Date.UTC(year, month, day));
-  }
-
-  // match: [4] hour [5] minute [6] second [7] fraction
-
-  const hour = +match[4];
-  const minute = +match[5];
-  const second = +match[6];
-
-  let fraction = 0;
-  if (match[7]) {
-    let partFraction = match[7].slice(0, 3);
-    while (partFraction.length < 3) {
-      // milli-seconds
-      partFraction += "0";
-    }
-    fraction = +partFraction;
-  }
-
-  // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute
-
-  let delta = null;
-  if (match[9]) {
-    const tzHour = +match[10];
-    const tzMinute = +(match[11] || 0);
-    delta = (tzHour * 60 + tzMinute) * 60000; // delta in mili-seconds
-    if (match[9] === "-") delta = -delta;
-  }
-
-  const date = new Date(
-    Date.UTC(year, month, day, hour, minute, second, fraction)
-  );
-
-  if (delta) date.setTime(date.getTime() - delta);
-
-  return date;
-}
-
-function representYamlTimestamp(date: Date): string {
-  return date.toISOString();
-}
-
-export const timestamp = new Type("tag:yaml.org,2002:timestamp", {
-  construct: constructYamlTimestamp,
-  instanceOf: Date,
-  kind: "scalar",
-  represent: representYamlTimestamp,
-  resolve: resolveYamlTimestamp,
-});