TypeScript lodash.repeat函数代码示例

			() => {
				const aHashtag = _.repeat( 'a', 139 );
				const bHashtag = _.repeat( 'b', 140 );  // too long - don't link

				const result = autolinker.link( `#${aHashtag} and #${bHashtag}` );
				expect( result ).toBe( `<a href="${urlPrefix}/${aHashtag}">#${aHashtag}</a> and #${bHashtag}` );
			} );

		it( 'should link an instagram mention that is up to 30 characters long', () => {
			const aUsername = _.repeat( 'a', 30 );
			const bUsername = _.repeat( 'b', 31 );  // too long - don't link

			const result = instagramAutolinker.link( `@${aUsername} and @${bUsername}` );
			expect( result ).toBe( `<a href="https://instagram.com/${aUsername}">@${aUsername}</a> and @${bUsername}` );
		} );

    it("should validate Id format", () => {
      //tslint:disable-next-line
      interface Material extends ValidatableMixin {
      }

      class Material implements ValidatableMixin {
        id: Stream<string>;

        constructor(id: string) {
          ValidatableMixin.call(this);
          this.id = stream(id);
          this.validateIdFormat("id");
        }
      }

      applyMixins(Material, ValidatableMixin);

      const badStrings = ["shaky salamander", ".hello", _.repeat("a", 256)];
      badStrings.forEach((badString) => {
        const material = new Material(badString);
        material.validate();
        expect(material.errors().hasErrors()).toBe(true);
        expect(material.errors().errors("id"))
          .toEqual(["Invalid id. This must be alphanumeric and can contain hyphens, underscores and periods (however, it cannot start with a period). The maximum allowed length is 255 characters."]);
      });

    });

 lines.forEach((line: string, index: number) => {
   let newLine: string = (index < lines.length - 1) ? "\n" : "";
   if (line && (index > 0 || !noIndentFirstLine))
     result += _.repeat(" ", unitIndent * numIndent) + line + newLine;
   else
     result += line + newLine;
 });

export const stringifyTreeNodeToXML = memoize((node: TreeNode, level: number = 0) => {
  const tabs = repeat(" ", level * 2);
  let buffer = `${tabs}<${node.name}`;

  for (const namespace in node.attributes) {
    const nsa = node.attributes[namespace];
    for (const name in nsa) {
      let value = nsa[name];

      if (name === "style") {
        value = stringifyStyle(value);
      }

      let attrName = name;

      if (namespace !== DEFAULT_NAMESPACE) {
        attrName = namespace + ":" + attrName;
      }

      buffer += ` ${attrName}=${JSON.stringify(value)}`
    }
  }

  buffer += `>`;

  if (node.children.length) {
    buffer += `\n`;
  }
  
  buffer += node.children.map(child => stringifyTreeNodeToXML(child, level + 1)).join("");

  buffer += `${node.children.length ? tabs : ""}</${node.name}>\n`;

  return buffer;
});

    return new Promise((resolve, reject) => {
      this.error = false;

      let customWordList = _.map(this.customWords, 'word');

      if (!_.isEqual(this.mnemonicWords, customWordList)) {
        return reject('Mnemonic string mismatch');
      }

      if (this.mnemonicHasPassphrase) {
        let walletClient = this.bwcProvider.getClient();
        let separator = this.useIdeograms ? '\u3000' : ' ';
        let customSentence = customWordList.join(separator);
        let password = this.password || '';

        try {
          walletClient.seedFromMnemonic(customSentence, {
            network: this.wallet.credentials.network,
            password,
            account: this.wallet.credentials.account
          });
        } catch (err) {
          walletClient.credentials.xPrivKey = _.repeat('x', 64);
          return reject(err);
        }

        if (walletClient.credentials.xPrivKey.substr(walletClient.credentials.xPrivKey) != this.keys.xPrivKey) {
          delete walletClient.credentials;
          return reject('Private key mismatch');
        }
      }

      this.profileProvider.setBackupFlag(this.wallet.credentials.walletId);
      return resolve();
    });

    transform(value: number) : string {
        let numDigits = Math.max(Math.floor(Math.log(Math.abs(value)) / Math.LN10), 0) + 1;
        
        let numZeroes = 3 - numDigits;

        return `${_.repeat('0', numZeroes)}${value}`;
    }

const transpileInferredProps = ({ type, properties }: Inference, path: string[] = []) => {
  if (type === InferenceType.ANY) {
    return `any`;
  }  else if (properties.$$each) { 
    let content = transpileInferredProps(properties.$$each, [...path, "$$each"]);

    const buffer = [];

    if (type & InferenceType.ARRAY) {
      buffer.push(`Array<${content}>`);
    }

    if (type & InferenceType.OBJECT) {
      buffer.push(`{ [identifier: string]:${content} }`);
    }

    return buffer.join(" | ");
  } else if (type & InferenceType.OBJECT) { 
    let content = `{\n`;
    for (const key in properties) {
      content += repeat(" ", path.length * 2) + `${ATTRIBUTE_MAP[key] || key}: ${transpileInferredProps(properties[key], [...path, key])};\n`
    }

    // allow for any props for now. Will eventuall want to request for template 
    content += repeat(" ", (path.length) * 2) + "[identifier: string]: any;\n"

    content += repeat(" ", (path.length - 1) * 2) + `}`;
    return content;
  } else {
    let content = ``;
    const buffer = [];

    if (type & InferenceType.STRING) {
      buffer.push("string");
    } 

    if (type & InferenceType.NUMBER) {
      buffer.push("number");
    }

    if (type & InferenceType.BOOLEAN) {
      buffer.push("boolean");
    }

    return buffer.join(" | ");
  }
}

                this.classes.filter(x => x.export).forEach(x => {
                    var name = x.name;
                    if (name === this.displayName) {
                        name = '_' + this.displayName;
                    }

                    lines.push(_.repeat(' ', indent + 4) + `class ${name} extends ${this.displayName}.${x.name} {}`);
                });